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E55 amg has two new batteries and thery are chaged and show…

Customer Question
E55 amg has two...

E55 amg has two new batteries and thery are chaged and show 12.7 volts under no load and 12.5v for the main and 12.3 for the aux when installed in the car. I still get a red battery adn visit workshop message

Mechanic's Assistant: Lots of things can cause problems with the battery. The Mercedes Mechanic will know what to do. Are you hoping to fix this yourself?

I have cleaned all the batery cabels and am about to check the ground straps and BCM

Mechanic's Assistant: Is there anything else important you think the Mercedes Mechanic should know about your Mercedes?

No if he is mr wizzard he can help

Submitted: 2 years ago.Category: Mercedes
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Answered in 1 hour by:
3/5/2016
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 2 years ago
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 6,245
Experience: 20 years Master Certified excellent fix rate and have access to factory wiring, and instructions.
Verified

Hello. Do you have a scanner that can read the battery control module ? Because you could have fixed the car BUT because the codes are not erased the warning will continue to pop up. Also there were issues with the battery control module where it needed to be reprogrammed. Hope this information helps.

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