Mercedes alternator not charging

There are a few things you can do to try and fix the Mercedes battery not charging problem yourself. First, check the battery terminals to make sure they're clean and free of corrosion. If they are, try resetting the car's computer by disconnecting the battery and then reconnecting it. In some cases, you may need to replace the battery entirely.Using the schematic below..... newTIS. 1-Confirm alt cable connection at starter is tight and not corroded. 2-Confirm there is 12v on alternator connection x6509 when measured to the metal alternator housing with engine off. 3-Measure voltage on x6509 to the metal alternator housing with engine running.A reading of 13+ volts would be indicative it is putting out charge . I have a mercedes 1979 300D the charging rate is 12.15 on battery at idle and ramps up with rpm to about 12.75. the battery is new and the alternator is 2 months old. the stator wire comes ... Alternator not Charging at idle with new alternator . 2004 benz c230 kompressor alternator/ battery red light comes on & was not charging i replace the alternator , its charging now, but after 2 minute of eng running light comes on while charging at 14.2 … read more Figure 8 Transfer the pulley to the new alternator and use the new 24mm nut and lock washer, secure it to 80 Nm (59ft/lbs.). Re-fit the two 15mm bolts that hold the alternator in place and torque them to 42 Nm (30ft/lbs.). The 10mm electrical connection is torqued to 4 NM (2ft/lbs.) and the 13mm electrical connection is torqued to 15 Nm (11ft/lbs.).The alternator tests about the same as a known good one, using vohmeter. Symptoms don't point to bad alternator. Read ALTERNATOR REPLACEMENT on 1990-1995 CARAVAN w/3.3/3.8L ENGINE to understand why I have not rushed to replace the alternator. Replacing belt and idler is a portion of that job, partly integrated with alternator mounting bracket, so I may do it to eliminate those three ...In this post, I will try to explain how to protect your alternator and what we decided to do regarding our alternator. Especially regarding the following. Protecting the alternator from overheating. Protecting the alternator from a load dump. Increase charging from the alternator. All references to lithium batteries in this post are related to ...There are only two connections to the alternator but you might have more than one wire on one of the terminals. They should be marked B+ and D+. The heavy wire (s) on B+ terminal are the alternator output and go to the battery positive terminal and to the light switch, you should have +12 V battery voltage on B+ with the battery connected. ak shark fin handguard 982 Posts. #5 · Oct 25, 2013. I would not put any stock into what AA told me about the alternator. I would perform a really simple test. With the alternator installed, engine running, lights on, check the charge voltage. If it is north of 13.5vdc then your alternator is fine. Else, just R&R the alternator.Slap a jump box on the car and it starts up. But no charging is occurring. We check every fuse. All good. We hook up the good scanner and check all the control units. Various low voltage codes but nothing that shows an alternator fault. Check the 4pun connector at the alternator for battery voltage per test and is good.In the 1999 and later year models, Ford Motor Company redesigned how the alternators are controlled and the above tests are not relevant. The tests do apply to 1996, 1997 and 1998 year models with the 3.8 liter engines. The Windstars with the 3.0 liter engine have a similar alternator and tests but there is one extra wire that this one does not ...6. Smell of Burning Rubber or Wires. A foul odor of burning rubber or wires could indicate that parts of your alternator are starting to wear out. Because the alternator's drive belt is under constant tension and friction — and because it's close to the hot engine — it may wear out over time and emit an unpleasant burning rubber smell.The latest Mercedes Sprinter has a 180A alternator as standard, while new Fiats offer a 180A or 200A alternator. Other brands are similar. Battery low-down. Now consider the leisure battery. The traditional 'split charge relay' that simply connects the leisure battery in parallel with the starter battery would find this scenario hard to handle.There will be a range more than a set number for charging. You can either install a voltmeter or carry a volt/ohm meter around with you. Alternators these days have internal regulators and that should be what tells your alternator to charge (or to pay cash) (see what I did there)The alternator is largely responsible for charging the vehicle battery while it's running. So, if the battery isn't charging or suddenly dies, it could be because of a malfunctioning alternator. In this case, recharging the battery won't be enough to resolve the issue. You may have to replace the alternator or dead battery. 2.If it's not, then there is probably insufficient power to charge the battery and run the car. If you suspect the alternator, then visually inspect it for damage or lose wiring. Again, it may be hard to get to so you may need to let an expert remove it for testing 5. Uncontrolled drain on the battery - Check any aftermarket devicesExciter wire is necessary to create the voltage required to start the alternator. The positive and negative cables are small and connect to the battery's positive and negative terminals. The alternator is also connected by the battery charging cable. It solely charges the battery and doesn't provide power to any other devices.You can, but they charge about 35 Euro just to check the state of the alternator. I got bushings from Ireland (ebay) for 7 Euro, but they didn't help. I paid 160 Euro for a new one from Germany (IL Motorsport). February 19, 2014 at 8:47 pm #575719. college man.1988 Mercedes 300CE: with a charging system problem..volts..alternator I have a 1988 Mercedes 300CE with a charging system problem. At idle, no load, I have a good 14.1 or so volts measured at the alternator and at the battery terminals.A relatively common "side-effect" of replacing a battery and/or alternator in a car is to have the voltage (battery) warning light come on. This is especially true in late-model vehicles with their more sophisticated internal diagnostic systems. There are usually two things that cause the battery light to come on after a battery replacement.Starting the engine requires the charge coming from the battery. But eventually, not charging the battery will leave the battery drained in the long run. Not only will the electronic and electrical parts function properly, it will not take the Mercedes Benz to places. This is where the Mercedes Benz Alternator comes into the picture.36 Posts. #2 · Sep 27, 2019. Next time use your volt meter to check the output voltage at the B+ alternator terminal, which should be battery voltage with key on, engine not running. and 13.6+ volts with the engine running. since it would be less than that, then check the alt input voltage and you would see it is less than battery voltage ...Mercedes Alternator. PART # 0009060822. Quality: Genuine - Original Equipment. Free shipping on orders over $99. Select vehicle to confirm fitment. ... If the measured electrical voltage drops below 12v it is a sure sign of an alternator charging issue, generally followed by a battery light on the dash illuminating. When diagnosing a charging ...#1. Our W168 A170 CDI (90Hp) will not start without a jump and then only runs for a few moments before stalling. To my knowledge that suggests a failed alternator. Find many great new & used options and get the best deals for Alternator Fits Mercedes-benz A-series A170 NAPA NAL1550 Replaces Sw011 23171n at the best online prices at eBay!. Swap ... funeral miami today Jul 13, 2013 · 1988 Mercedes 300CE: with a charging system problem..volts..alternator I have a 1988 Mercedes 300CE with a charging system problem. At idle, no load, I have a good 14.1 or so volts measured at the alternator and at the battery terminals. Alternator Charge Current [A]: 120. Shipping Options: Ground $ 684.43 . Quantity: Add to Cart (4) In Stock . This Part Fits: Catalog: B. Vehicle Sub Model; 1997 Mercedes S320 : LWB: 1997 Mercedes S320 : SWB: Show More. Related to Alternator. Alternator Reviews - 1997 Mercedes S320. Bosch | W0133-1600439. My product came in 3 days. It was ...2014 Mercedes -Benz C-Class Alternator OEM 98K Miles (LKQ~325424275) Used. Read more. No Interest if paid in full in 6 mo on $99+ with PayPal Credit *. It's only by using the correct lithium battery charging solution/s in a given situation, that you can be sure of system safety. Victron have a range of solutions, such as the Buck-Boost DC-DC Converter (used in the Victron Van install ), and the similar lower power Orion-Tr Smart DC-DC Charger Isolated, as well as the BMS 12/200 as used in ...Jan 09, 2017 · I have a 01 mercedes s600 and when purchased the car the alternator was not charging the battery at idle but some at higher rpms. Purchased a rebuilt one from autozone and had it installed and still did not work. Just purchased a oem used alternator with 15k miles on it hoping this should fix the problem. Any advice? My car has 103000 miles. Yes, idling your car for as little as two minutes will be the equivalent of driving a mile! Leaving your car idling will waste not only gas but does not allow your battery to charge. Not allowing your battery to charge will drain its power during idling. During idling, your engine and alternator run slowly.• Defects: Mercedes-Benz USA, LLC (MBUSA) warrants to the original purchaser and each subsequent owner of Genuine Mercedes-Benz Parts, equipment, or factory-approved accessories, except tires, installed on a Mercedes-Benz vehicle which is operated in the U.S.A. under normal use and servic e, to be free from defects in material and workmanship.Step 4. Start the car. Reconnect your leads to the battery as shown in step 2. The meter will now show the volts being produced by the alternator, via the battery. This is the charging voltage of the system. A healthy alternator generally will produce 14+ volts. Anything under and the alternator should be tested further. reeder a8i quad There are a few things you can do to try and fix the Mercedes battery not charging problem yourself. First, check the battery terminals to make sure they’re clean and free of corrosion. If they are, try resetting the car’s computer by disconnecting the battery and then reconnecting it. In some cases, you may need to replace the battery ... To replace a defective alternator on your Mercedes-Benz C 240, perform the following steps. Secure 10mm, 12mm, 13mm, 14mm, and 15mm socket wrenches. Open your door and locate your main power terminal's dust boot to locate the main power wire, which is connected to your battery. Remove the nut using a socket or wrench.If you happen to encounter the warning "Stop Vehicle Leave Engine Running" with your Mercedes Benz, there is a chance that it has a bad voltage regulator. If your car's voltage regulator burns out, the battery will not be capable of charging anymore. This will cause the battery to die eventually.There are a few things you can do to try and fix the Mercedes battery not charging problem yourself. First, check the battery terminals to make sure they’re clean and free of corrosion. If they are, try resetting the car’s computer by disconnecting the battery and then reconnecting it. In some cases, you may need to replace the battery ... I checked the voltage on and it's at 11.2 while powered on and when I shut it off it slowly goes up to around 11.5, so Im guessing this means I still have a strong battery confirming my assumption about the alternator being the issue! Any help would be greatly appreciated also im getting a code P065B -Status Pending - the alternator has a ...American Power Systems, Inc. (APS) proudly presents the MB-120N62-58V, a new alternator solution for the Mercedes-Benz Sprinter. Units have been specifically designed to fit the N62 secondary alternator bracket made available by Mercedes-Benz for the Sprinter van, but for which the manufacturer does not provide a complementary alternator solution.Order Mercedes Benz GL450 Alternator online today. Free Same Day Store Pickup. Check out free battery charging and engine diagnostic testing while you are in store. 15% off orders over. 2014 Mercedes -Benz C-Class Alternator OEM 98K Miles (LKQ~325424275) Used. Read more. No Interest if paid in full in 6 mo on $99+ with PayPal Credit *. hallmark manufacturing company So in my situation the 'engine shutdown detection' doesn't work. The alternator doesn't kick in, or at least not in a way that makes the voltage go up to 13+ volts. I have read that the Sprinter keeps the battery charged around 80% (12.4 volt) to leave enough room to charge while braking (the voltage jumps to 14+ volts).A reading of 13+ volts would be indicative it is putting out charge . I have a mercedes 1979 300D the charging rate is 12.15 on battery at idle and ramps up with rpm to about 12.75. the battery is new and the alternator is 2 months old. the stator wire comes ... Alternator not Charging at idle with new alternator . Fuse Layout Dodge Sprinter 2002-2006 Information from the owner's manual of 2006 is used. The location and function of fuses in cars produced at other times may differ. Driving with a dead alternator means the battery is not charging, and it has to supply power to other electrical devices in the car. The other devices and the engine draw power from the battery, which has insufficient charge, draining it. To increase more running time for the vehicles, you can try the following tips;auxiliary battery correctly and to 100% state of charge. The BCDC1225D, BCDC1240D or Manager15 or Manager30 should be used instead of the SBI12 to compensate for these situations and to charge and maintain your auxiliary batteries to 100%. I have a Ford Ranger with 'Smart Charge' technology, do I need to have this software disabled by theAdd up the total electrical draw and compare with your alternator's rated output. The output should be 50 percent greater than the draw. One final way to estimate your vehicle's electrical load is to check the accessory fuses. The amp ratings, although slightly higher than the highest draw of each component, will give you a good estimate of ...A reading of 13+ volts would be indicative it is putting out charge . I have a mercedes 1979 300D the charging rate is 12.15 on battery at idle and ramps up with rpm to about 12.75. the battery is new and the alternator is 2 months old. the stator wire comes ... Alternator not Charging at idle with new alternator . Apr 06, 2020 · This means that you could have a weak alternator, or a poor connection at the battery terminals. You could also have a loose drive belt, which is what supplies power to the alternator itself. If the drive belt is loose or not working properly, the alternator will not charge. Loud Noises. The drive belt is not tensioned. The fuse in the line between the battery and alternator is blown. The battery has a bad cell. The voltage to the alternator field is missing from the regulator or ...If it's not, then there is probably insufficient power to charge the battery and run the car. If you suspect the alternator, then visually inspect it for damage or lose wiring. Again, it may be hard to get to so you may need to let an expert remove it for testing 5. Uncontrolled drain on the battery - Check any aftermarket devices anubis chestgithub odb2Tighten the Battery Clamps. At times, the battery light remains on due to a weak connection between the car battery and the cables that connect to it. Ensure the clamps fastened to the battery terminals. In case you notice the clamps are loose, then use a small wrench to tighten them until they completely cover the terminals. The car battery is ...do not practice divination or seek omens louis vuitton springsummer 2022 handbags sudoku solver project monique debarge lipstick alley. Mercedes alternator not charging; techkey bluetooth adapter driver windows 11; openvpn server windows; illegal things list; mn stimulus check 2022; covert narcissist first date; asurion back glass repair cost A relatively common "side-effect" of replacing a battery and/or alternator in a car is to have the voltage (battery) warning light come on. This is especially true in late-model vehicles with their more sophisticated internal diagnostic systems. There are usually two things that cause the battery light to come on after a battery replacement.Order Mercedes Benz GL450 Alternator online today. Free Same Day Store Pickup. Check out free battery charging and engine diagnostic testing while you are in store. 15% off orders over. 2004 Mercedes-Benz E500 4Matic 5.0L (113.969) 5-spd (722.6) — WDBUF83J04X112828 Alternator Will Nt Charge Looking for alternator description of operation. Auxiliary battery in the car has been replaced as it was in very bad shape and consumer shutoff codes stage 1 and 2, 9051,9050. Now alternator does not come alive.when the vehicle voltage supply gets low, the car will shut down high current consumers (seat heaters, climate control fan, etc) until the voltage stabilizes. you might have a battery going dead, or the alternator might be wiggin out and not charging at times or when it gets hot.Answer (1 of 16): several possibilities step 1: check battery voltage if it is lower than 10-11v it is just so low the car is confused and thinks it isn't working step 2: check all cables and check fuses between alternator and the battery and the ECU as it might just be a sensing issue caused...Main Differences between Alternator and Generator. Alternator. Generator. A machine that converts mechanical energy into AC electrical energy. A machine that converts mechanical energy into AC or DC (electrical). It can only generated Alternating Current "AC". It can generate either of both Alternating current AC or Direct Current "DC".Charging system not charging. Jump to Latest Follow Status Not open for further replies. ... My Elantra has a Clutch on the pulley of the alternator. Its used to improve MPG. By reducing the load on the engine. ... Mercedes-Benz Forum 631K+ members. The Lexus RX NEW! 40+ members Home. Forums. Gen 8 Malibu, Years 2013-2015 and 2016 Limited ...There are only two connections to the alternator but you might have more than one wire on one of the terminals. They should be marked B+ and D+. The heavy wire (s) on B+ terminal are the alternator output and go to the battery positive terminal and to the light switch, you should have +12 V battery voltage on B+ with the battery connected.Pair your vehicle and activate services right from the app. The Mercedes me connect app lets you pair your vehicle and activate services like Remote Engine Start, Remote Door Lock & Unlock, Locate Vehicle and more, all on-the-go. Simply scan the QR code in the vehicle's multimedia system, or enter your Vehicle Identification Number in the app ... church devotions Slap a jump box on the car and it starts up. But no charging is occurring. We check every fuse. All good. We hook up the good scanner and check all the control units. Various low voltage codes but nothing that shows an alternator fault. Check the 4pun connector at the alternator for battery voltage per test and is good.From the Mitsu manual: "The generator relay functions as a backup for the flow of electricity to the rotor coil (field coil) if there is a disconnection or damaged wiring of the charging warning light." It actually is a resistor and diode in series but looks like and is referred to as a relay.Use the buttons on the steering wheel to display vehicle speed or temperature on the cluster. Put the key in the ignition, and turn to position one (I) (right before you start the car) Hit the reset button 3 times quickly. The reset button is on the side of the cluster. You should see a value of VB: 12 volts or more on your dash and hear a beep ...There will be a range more than a set number for charging. You can either install a voltmeter or carry a volt/ohm meter around with you. Alternators these days have internal regulators and that should be what tells your alternator to charge (or to pay cash) (see what I did there)Before performing any tests of your alternator, charge and test your battery. If the battery is faulty, your alternator tests will not be accurate. ... Applicable Models: Mercedes-Benz C350 (2008-15) Mercedes-Benz GLK350 (2010-15) - Nick at Pelican Parts . JohnS. May 9, 2020. I just did this on a 2010 C300 3.0L V6. A few suggestions36 Posts. #2 · Sep 27, 2019. Next time use your volt meter to check the output voltage at the B+ alternator terminal, which should be battery voltage with key on, engine not running. and 13.6+ volts with the engine running. since it would be less than that, then check the alt input voltage and you would see it is less than battery voltage ...Using the schematic below..... newTIS. 1-Confirm alt cable connection at starter is tight and not corroded. 2-Confirm there is 12v on alternator connection x6509 when measured to the metal alternator housing with engine off. 3-Measure voltage on x6509 to the metal alternator housing with engine running. army failed drug test counseling The average alternator replacement cost is between $200 and $800, depending on the car model and labor costs. An alternator costs $150 to $400 and labor costs $50 to $400. Let’s explore the reasons and how to fix the alternator not charging the battery. A quick tip: I rely on my battery tender to do the power maintenance for me. Check the fuse. Check the terminals/wirings connected to your battery. Check the voltage regulator. Check the serpentine belt. Check the new battery. If it's astock type, then you need to make sure the alternator actully turns on. The big red wire goes to the starter and eventually tot he battery. The plug that sticks intot he alt case has 2 wires in it. One of them is keyed 12v and that tells the alternator to turn on. If you have a bad plug, or broken wire, the alt will spin but do nothing.Jan 06, 2012 · Mercedes ML320 CDI wont charge battery. alternator is putting out 14v but not getting to battery. Car was jump - Answered by a verified Mercedes Mechanic We use cookies to give you the best possible experience on our website. The connections between the different circuit parts are shown in an alternating schematic based on 3 wires. There are three key wires in the loop: a positive wire for the battery, a sensing wire for voltage, and an igniting wire. The ignition input wire is linked to the engine. The energy detection cable monitors voltage and transmits it to the ...It should be within 85% to 90% of the rated output of your alternator (100% or more is even better). If this is low, suspect faulty diodes in the alternator. Stop the engine as soon as you can. Still with the alternator giving a high output connect the voltmeters as shown as V1 and V2 on the diagram below.One thing you can do to troubleshoot your car is to go to Advance Auto Parts or AutoZone and have them do a FREE alternator / battery check. This test may be able to point you in the right direction. 3. Secondary Battery / Auxiliary Battery. Some Mercedes Benz models such as the E Class or the CLS Class have a secondary battery.Faster recharge of batteries saving time and fuel. Generator replacement- using your existing engine with a Nations Alternator gives you unlimited power without adding any additional fuel or engine. Reliability- Nations has the experience and quality to last under the harshest conditions. Available in 12, 24 and 48 volt configurations to suit ...Step 4. Start the car. Reconnect your leads to the battery as shown in step 2. The meter will now show the volts being produced by the alternator, via the battery. This is the charging voltage of the system. A healthy alternator generally will produce 14+ volts. Anything under and the alternator should be tested further. Mercedes Alternator 0009062822 - Valeo 439849 | | + 0 MORE. PART # 439849. Quality: OEM - Original Equipment. Free shipping on orders over $99. ... If the measured electrical voltage drops below 12v it is a sure sign of an alternator charging issue, generally followed by a battery light on the dash illuminating. When diagnosing a charging ...7: A Dead Battery. A bad alternator can killing your car's battery, even if the battery wasn't the problem to begin with. Natnan Srisuwan/ThinkStock. While not technically an alternator problem, a car that won't start is a definitive sign that there's a problem in the starting system.Find out how to fix for free stop vehicle shift to P leave engine running warning message on Mercedes-Benz W205 S205 C205 A205 W222 GLC X253 C253 ... so the last step or advice would be order trickle charger and charge the battery with it. It is not expensive and trickle charge could be used in any other vehicle as well. ... A defective alternator.Mercedes-Benz E550 Alternator Replacement Costs RepairSmith offers upfront and competitive pricing. The average cost for Mercedes-Benz E550 Alternator Replacement is $730. Drop it off at our shop and pick it up a few hours later, or save time and have our Delivery mechanics come to you. 2010 Mercedes-Benz E550 5.5L V8 • 122,000 miles $662 - $809The easiest method to check the alternator is by measuring the voltage at the battery terminals when the engine is running. Start your CLA. Connect the black cable of the multimeter to negative terminal of the battery, and the red cable to the positive terminal. The voltage should be between 13.5 and 14.8 volts with the engine running.Location: ~Carefree Highway~. Posts: 5,832. You can try a few fixes. Tighten your alt belt. Clean the battery contacts. Clean the negative ground on the bell housing. Put tape over the TDC hole!! Take the car to an auto parts store for a free check. Take the alternator to an auto parts store for a free check.When the alternator starts charging positive voltage is equal on both sides of the bulb filament and the light goes out. A lot of manufacturers did it that way to stop backfeed to the ignition system so the engine would shut off when you turn of the key. 0. Mar 23, 2013. Thread starter. harp competition 2023Checking the connections of your charging system, such as battery clamps, as well as the cables for corrosion. Testing the voltage of the battery before and after the engine is turned on. With the engine turned on, if the car alternator is functioning properly, battery would be charging up and its voltage should increase.When there is no current applied to the field, there is no voltage produced from the alternator. When voltage drops below 13.5 volts, the regulator will apply current to the field and the alternator will start charging. When the voltage exceeds 14.5 volts, the regulator will stop supplying voltage to the field and the alternator will stop charging.Answer (1 of 16): several possibilities step 1: check battery voltage if it is lower than 10-11v it is just so low the car is confused and thinks it isn't working step 2: check all cables and check fuses between alternator and the battery and the ECU as it might just be a sensing issue caused...Loosen the adjustment arm bolt and alternator pivot assembly bolt. 2. Fit a new, high-quality belt over the appropriate pulleys. 3. Tension the alternator until the belt is securely tightened in place. Re-tighten the pivot assembly and tension arm bolts. To test tension, place a 15/16'' wrench on the alternator shaft nut and apply pressure. If theA blue wire runs from the alternator to pin 66 of the Ecu. Using your trusty Multimeter, that wire should be very carefully checked for connection faults at each end -and along its length, sometimes a length of jumper wire can prove the blue wire to be faulty. Its not unusual to get a rubbing on the wire and hence your trouble. sunrun ppa contract pdfPull the Alternator Connector/Plug off. The 2 large slots in the Connector fed by the 2 fat Read Wires should have the same voltage as your Battery has all the time. With your key off the smaller slot in the Connector should have no Voltage. When you turn the key on you should get slightly less than Battery Voltage.the alternator's current output to be lost, something you can't miss performing a load test. Even so, an understanding of ripple will benefit the technician combating mysterious electrical or electronics problems, and charging issues. A failing alternator diode will not only contaminate the power supplied to the vehicleThey are not designed to recharge a dead battery so you must test the battery before you attempt to diagnose the rest of the charging system. Alternators seem like they are working 100% of the time but in actuality they are turning on/off at regular intervals. Attempting to recharge a dead battery will overwork the alternator and may burn it out.3. Damaged Battery or Cables. Probably the most common cause of the battery warning light is a failure of the battery itself. Over time, batteries can become damaged, the terminals can become corroded, or the cables can become dislodged or damaged. If this happens then the battery will no longer be able to hold the charge from the alternator ...Oct 01, 2021 · C320/2002/6 cyl. Oct 1, 2021. #1. I have replaced the alternator and the battery, however the battery is not being charged and keeps draining. I have researched and discovered that there is a 175 amp fuse that may be blown keeping the alternator from charging the battery. In all my research, I am unable to locate where in the Sam hell this fuse ... Another symptom of a weak charging system is when the dash lights and headlights dim at idle, but become brighter when the engine is revved. This problem could be caused not only by a weak alternator, but also by a failing battery, poor connection at the battery terminals or a loose serpentine belt.A whining/buzzing noise coming from the alternator is another symptom of alternator troubles.If you happen to encounter the warning "Stop Vehicle Leave Engine Running" with your Mercedes Benz, there is a chance that it has a bad voltage regulator. If your car's voltage regulator burns out, the battery will not be capable of charging anymore. This will cause the battery to die eventually.There are only two connections to the alternator but you might have more than one wire on one of the terminals. They should be marked B+ and D+. The heavy wire (s) on B+ terminal are the alternator output and go to the battery positive terminal and to the light switch, you should have +12 V battery voltage on B+ with the battery connected. lerna install dependencies xa