Battery, alternator, stop vehicle light on?

2006 MERCEDES BENZ E350
144,000 MILES • 3.5L • V6 • 4WD • AUTOMATIC
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ELWAPO360
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I had to change the accelerating battery in my vehicle, after doing so my battery alternator stop vehicle light came on. When I start the vehicle and stays on. how can I fix this problem what can cause this problem?
Jan 5, 2023 at 7:03 AM
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STRAILER
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accelerating battery? do you mean the auxiliary battery? We should run the codes to see what comes up (CAN SCAN) you can get a CAN scanner (Controller Area Network) from Amazon from about $32.00.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

and

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Amazon CAN scanner link.

https://amzn.to/3G7mpFP

Also, I would check the alternator output this guide can show you how:

https://www.2carpros.com/articles/how-to-check-a-car-alternator

Here are the instructions on how to change both batteries out which must be done in the correct order. Check out the images (below). Please let us know what happens.
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Jan 5, 2023 at 11:57 AM