What does W211 auxiliary battery do?

Mercedes-Benz auxiliary battery function The main function of mercedes-benz auxiliary battery is to provide voltage to “stop start” function, so this function may not work until you solve battery malfunction. You can keep driving a car for while, but it is always recommended to fix any fault as soon as possible.

Does W211 have auxiliary battery?

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 is located in the right side of the engine compartment, near the HVAC intake.

Can I drive my car with a failed auxiliary battery?

It’s not recommended to drive when you’re experiencing issues with your auxiliary battery. However, it does not put you in any immediate danger as long as you don’t notice a decline in the overall handling and performance of your car.

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. This is due to the fact that while it is running, the alternator of the vehicle is giving it the charging it needs.

Will auxiliary battery drain main battery?

For these applications, having a multiple battery system is essential. However, simply wiring extra batteries into a vehicle’s electrical system can allow auxiliary batteries to drain power from the main battery, inhibiting engine starting and other essential functions.

Does Mercedes E class have 2 batteries?

A. 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.

Does my Mercedes have 2 batteries?

Why do Mercedes-Benz vehicles have two batteries? Two batteries are needed because it has too many electrical demands. The main starting battery is in the trunk and the secondary battery is located under the hood, near the windshield.

Can an auxiliary battery drain the main battery?

What happens when the auxiliary battery dies?