Red battery light visit shop light comes on

2004 MERCEDES BENZ E320
155,000 MILES • 6 CYL • 2WD • AUTOMATIC
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YOUOPEEIN
  • MEMBER
  • 1 POST
For 2 months the red battery Visit Shop light comes on and has been ignored. Had rear battery checked; was told battery and alternator charging okay. Went to start car today and would not accept key - no power. Remembered the auxiliary battery and replaced it today. Everything in, properly tightened won't accept the key -no power. Is there a fuse that might have popped? Does the aux battery have to be charged?
Jan 23, 2020 at 8:29 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Hi,

If the battery is weak, it can cause a problem. Have you confirmed the batteries are both charged? Does anything electrical on the vehicle work? For example, the lights, interior lights, radio, and so on?

Here is a quick easy to load test a battery to determine if it needs charged or is bad:

https://www.2carpros.com/articles/car-battery-load-test

Let me know.
Joe
Jan 24, 2020 at 1:31 PM
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