Needs some ideas on 603 odd voltage drop - PeachParts Mercedes-Benz Forum

justinperkins · #3 02-20-2007, 02:20 PM

Quote:

Originally Posted by bustedbenz

Have you got a battery charger?

Don't "good" batteries usually have a little more voltage than that on them most of the time? My glowplugs on my 603 just pull it down to low 12.x usually. I'll check later.

This is how it went down this morning, engine cold after sitting overnight, outside temp was in the low 60's...

Key not on, battery voltage at 12.4
Turn key on, battery voltage dropped to 11.4 and no GP light
Turn key off, battery voltage goes back up to 12.4
Turn key on, batter voltage dropped to 11.6 and GP light comes on, car starts perfectly (better than it did before I replaced the GPs).

No I don't have a battery charger, maybe I should get one.