S-Class (W140) 1991-1999: 300 SD, S 350TD, 300 SE 2.8, S280, 300 SE 3.2, 300 SEL 3.2, S320, S320L, 400 SE, S420, 400 SEL, S420L, 500 SE, S500, 500 SEL, S500L, 600 SE, S600, 600 SEL, S600L, 500 SEC, 600 SEC

Electrical Gremlins

Old Feb 20, 2006 | 08:03 PM
  #1  
thamberg's Avatar
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Joined: Jan 2006
Posts: 4
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From: Upstate South Caroliina
2001 S500;1992 300SE
Electrical Gremlins

'92 300SE with following electrical gremlins:
1. cruise control doesn't work (did till I replaced a brake light)
2. ABS orange light comes on with first application of brakes
3. no voltage at glove box light
4. outside air temp indicator is very dim and only reads between 129 and 136F
5. rear head restraint release switch on console doesn't (but I can release head restraints by pulling a manual vacuum on lines leading to head restraints)
6. applying left turn indicator intermittently caused all the instrument gauges/warning lights to momentarily flash, then return to service
7. headlight windshield wipers don't
8. "flash to pass" high beam function doesn't work
9. rear seat HVAC does not blow conditioned air(hot or cold)

anybody out there with some time savers before I start dismantling things?

Thanks y
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Old Dec 25, 2017 | 01:38 PM
  #2  
Speedy55's Avatar
Member
 
Joined: Apr 2017
Posts: 88
Likes: 4
From: Toronto, Canada
2004 E55 2008 ML63
1. Turn signals don’t work
2. Gas gauge doesn’t work
3. Rear view camera doesn’t work
4. Locks do not lock/unlock.
5. Push to start doesn’t work.

this happened once before, but it went away after a night of being parked.
i think water is getting in somewhere.
any idea where the control module would be for those affected devices/features.
i figure it would be the best place to start looking.
thanks
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Old Dec 25, 2017 | 02:01 PM
  #3  
oldsinner111's Avatar
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Joined: Jun 2010
Posts: 1,246
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From: tennessee
s320
biodegradable wiring thru out car too.Not just engine.
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