Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 01-30-2004, 09:39 PM
Registered User
Join Date: Sep 2002
Location: Utah
Posts: 80
W124 idiot lights, alternator? (again)

My wife's car died with a dead battery. I had replaced the alternator voltage regulator last October--brushes were worn. As I recall, most of the symptoms then were repeated this time. She said the dash warning lights had been dim again, recently. (Of course, whenever I drove it they went out after less than a minute--Murphy's Law in reverse?.) After I recharged the battery I test drove it. Five of the lights and the fuel light are always dim. The headlamp, SRS, and check engine stay off. ABS, ASR and Traction! are off but come on bright when braking below 20 mph. The red battery and brake lights are dim at idle and bright while driving. The battery showed 11.95 V while running at 2000RPM with headlights, fan, and wipers on. I pulled code 2.

My battery cables gave a slight spark when I disconnected and reconnected them. A post I found while searching mentioned this could indicate an electrical short, possibly a wire under the passenger side carpet. (The engine wiring harness was replaced 15 months ago). We also have an left rear window that readily goes down but intermittently is balky about going back up.

My plan is to either order and replace the voltage regulator, and to phone the local alternator rebuilder, who is very good and almost free, and maybe bring the car or alternator into him. It certainly needs new bearings anyway. The car has 140k miles now.

Thanks for any ideas/comments.
94 E320 Wagon, 170k, totalled in 2006
2002 BMW 525i Wagon, 75k
1991 BMW 318is (two of 'em)
Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 03:22 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page