Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

How to Restore the Auxiliary Battery on a Mercedes

Model: Mercedes Mercedes Various
Part: Battery

Mercedes vehicles come equipped with two batteries: the standard battery that powers the starter motor for ignition and all other electrical systems, and a second auxiliary battery primarily used for the start-stop system. The first battery is located in the engine compartment at the front, while the auxiliary battery is also in the engine compartment but under a protective cover just below the windscreen on the right side. To access it, lift this plastic cover and disconnect the two power terminals, always disconnecting the negative first and then the positive.

Updated on 20 May 2026 by ScegliAuto

Video tutorial

Related tutorials

How to Remove and Change the Backup Battery of a Mercedes
How to Remove and Change the Backup Battery of a Mercedes
Mercedes Mercedes Various The backup battery (or auxiliary battery) powers electrical equipment as a supplement to the main starting battery and mainly helps with the numerous…
How to Easily Reset a Fuse on Our Mercedes
How to Easily Reset a Fuse on Our Mercedes
Mercedes Mercedes Various How do you easily reset a fuse? Let's see how in this video. First, open the locking elements and remove the cover. Our vehicle provides instructions…
How to put a Mercedes automatic transmission in neutral
How to put a Mercedes automatic transmission in neutral
Mercedes Mercedes Various If we need to put our Mercedes vehicle in neutral for towing, diagnostic tests, or other reasons, and want to do it safely, this is the appropriate v…

Other guides you may be interested in

How to Replace the Cabin Filter on the Opel Grandland X

If you own an Opel Grandland X and want to know the steps to replace the cabin air filter, carefully read the following guide and follow the described steps. First, enter the vehicle and go to the passenger side. Then, locate the box containing the air filter in the lower side area of the dashboard. Remove the cover of the box and finally replace the old filter with the new one. Refit the cover, and you are done.

Watch the video!


by ScegliAuto

More videos