The 2012 Mercedes CLS550 has two batteries in it, the main one in the trunk the auxiliary battery behind the driver side of the dash.
Subsequently, How do you jumpstart a Mercedes CLS 550?
Method 1 Jump start Mercedes-Benz battery using jump cable
- Get your jumper cables out. …
- Bring the helper car next to your Mercedes-Benz. …
- Set emergency brake. …
- Open hood. …
- Turn helper car off. …
- Locate the battery on the helper car. …
- Connect the clamps to the Mercedes-Benz jump start terminals. …
- Start the helper car.
then, What does the auxiliary battery in a Mercedes do?
Auxiliary batteries work with your main starter battery, and as a backup battery in the event the main battery becomes disabled. It prevents your vehicle’s electrical components from dropping when starting/stopping your engine and keeps your radio, GPS, and other in-vehicle electrical components turned on.
Thereof Where is the auxiliary battery located? The main location of the auxiliary battery is the left side of the dashboard.
What does it mean when my Mercedes says auxiliary battery malfunction?
If this auxiliary battery develops a malfunction, it will show up as an error message on the dashboard. … You will know that it’s the secondary battery that is at fault, because the car will still turn on and some functions will still work. The auxiliary battery does not affect the car’s mechanical functions.
21 Related Questions Answers Found
What would cause a Mercedes not to start?
Check the key fob battery and Driver Authorization System
Other issues preventing start can include ECM / PCM computer failure electrical problems, or issues with the camshaft position sensor, shifter selector module, or the driver authorization or immobilizer device.
Can I drive my car with a failed auxiliary battery?
While a failed auxiliary battery will not prevent your vehicle from driving, it can cause significant complications, including important accessories malfunctioning or not working at all. It can also put additional strain on the rest of your charging system components.
How do you know if your auxiliary battery is bad?
Symptoms of or a bad auxiliary battery malfunction
- The battery symbol on the dashboard.
- Stop vehicle shift 2P leave engine running.
- Stop vehicle leave engine running.
- Auxiliary battery malfunction.
Can you charge an auxiliary battery?
You can easily use your alternator to charge your second (auxiliary) battery simply by connecting the positive terminals of both batteries so that they’re in parallel.
How long does an auxiliary battery last?
Properly cared for and maintained, you can expect anywhere from 18 months to 3 years of life from an auxiliary 12-volt battery. Much will depend on frequency of use, and how well the battery is protected. Rough roads can cause the cells to break down, reducing the lifespan.
What causes a no crank no start?
If the fuel pump is not working correctly, the engine won’t be able to run, and it will shut off. If the fuel pump, fuel injector, or fuel filter is damaged, this can cause the no crank/no start condition. … You also should check the fuel filter, as that could be the main problem.
Why wont my car start but I have power?
If your vehicle won’t start, it’s usually caused by a dying or dead battery, loose or corroded connection cables, a bad alternator or an issue with the starter. It can be hard to determine if you’re dealing with a battery or an alternator problem.
Why would a car suddenly not start?
A broken starter is another common reason your car won’t start. A starter is an electrical motor that is connected to the battery. It’s role is to set the engine (i.e. pistons, crankshaft, etc.) … If the starter goes bad, the engine will not crank properly or may not crank at all when you turn the ignition key on.
What does W211 auxiliary battery do?
The main battery in W211 models is located in the center of the trunk, mounted in a well, below the trunk carpet. … The auxiliary battery supplies power for a limited time if system charging or battery voltage drops. The battery control module monitors system voltage.
How long does a auxiliary battery last?
Properly cared for and maintained, you can expect anywhere from 18 months to 3 years of life from an auxiliary 12-volt battery. Much will depend on frequency of use, and how well the battery is protected. Rough roads can cause the cells to break down, reducing the lifespan.
Why do Mercedes have two batteries?
Some Mercedes models have two batteries, a main starting battery located in the trunk and a secondary smaller battery located under the hood near the windshield on the passenger side of the car. Essentially there is so much electrical demand on this car it needs two batteries.
What happens if auxiliary battery dies?
Having a battery that is dead will result in you not being able to crank the car when needed. Usually, the car will run once it has been jumped off, but will quickly die back out after it is turned off. … Once the alternator stops, the cells in the battery will not be able to hold a charge and will cut off.
What happens when the auxiliary battery dies?
The dead aux battery will cause this light to come on. If you do not disconnect it, it will be discharging your main battery when the vehicle is off. This could leave you without enough power in the battery to start the car.
How long can I drive with an auxiliary battery malfunction?
Remember to never drive for over 100km after you notice an auxiliary battery malfunction code on your vehicle so that you can avoid damaging your car further.
How long does it take to charge an auxiliary battery?
“ IF “ the battery is that low then to charge the battery up while driving will probably take at least 5 or 6 hours just to get the bulk of the charge back into the battery. To fully charge it will probably take 8 to 10 hours.
Can you charge a Mercedes battery?
All you need is a 1.5 or 2.0 Amp 12 volt charger. If money is not an issue, you can get a charger and starter at the same time. … If you try to charge a dead battery by jumping starting the car or putting a current over 10 amps on it you risk on damaging the battery.
Can I trickle charge a Mercedes battery?
A trickle charger keeps your Mercedes-Benz battery charged, which in turn, results in your battery lasting longer.
What are the signs of a bad solenoid?
As a result, the common signs of a bad starter solenoid include:
- Engine Doesn’t Crank or Start. …
- No Clicking Noise When Trying to Start the Engine. …
- Starter Spins Without Fully Engaging the Flywheel (Rare) …
- Engine Cranks Slowly (Rare) …
- Test the battery. …
- Check That Power is Getting to the Starter Solenoid.
How do you tell if it’s your starter or ignition switch?
Test the Starter
It is under the hood, usually on the passenger side at the bottom of the motor next to the transmission. The ignition switch is a set of electrical contacts that activates the starter and usually is located on the steering column.
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