Having problems with your Mercedes-Benz 420-Series ?
Having a charging problem on my mercedes 420sel 1991. I replaced the alternator. Should I have to replace the battery also?
If you are having a charging problem and you replace the alternator but not the battery and it is still not charging I would replace the battery. If the battery is old and has a weak cell it will not take a charge or hold one.
Repair Help & Product Troubleshooting for Mercedes-Benz 420-Series
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