How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask MB Paul Your Own Question
MB Paul
MB Paul, Mercedes Technician
Category: Mercedes
Satisfied Customers: 3567
Experience:  Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes
15777119
Type Your Mercedes Question Here...
MB Paul is online now
A new question is answered every 9 seconds

I have a red battery light on with #'s next to the pos/neg

Customer Question

I have a red battery light on with #'s next to the pos/neg symbols in the left display and a red brake light with a temp degree # in the right display. The battery and alternator were replaced in May. The car had not been driven for several months. I drove it around to get the comfort features restored but once they were restored these other lights came on.
JA: Have you tested the battery? Have you tried testing the alternator?
Customer: No...and I do not have a clue how to do that...other than taking it to the dealer.
JA: What is the model/year of your Mercedes?
Customer: 2007 SL550
JA: Are you fixing your SL550 yourself? What have you tried so far?
Customer: No I am not fixing it myself. I just planned to drive it...clearly I will be driving it to a repair shop.
JA: Anything else you want the mechanic to know before I connect you?
Customer: No, thank you.
Submitted: 2 months ago.
Category: Mercedes
Expert:  Pete replied 2 months ago.

Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.

Were both batteries replaced on this model here?If not which battery was replaced under the hood or in the trunk?

Let me know,thanks Pete

Related Mercedes Questions