[W126 Coupe] All Indicator lights come on when Braking

[Mike R.]

To make it home, I'd suggest treating the problem as if the alternator is toast - minimize the electrical load: no HVAC (no blower motor), no radio, disconnect as many lights as you think you can get away with so the gendarmes don't get upset (e.g., one headlight, all parking, one brake). Don't use the cruise control, coast as far down as you can so the brake lights are on the minimum time, etc. 

If there is a major auto parts store (AutoZone or Pep Boys) on the way home, stop in and have them check your running battery voltage. If there is no alternator output, they might be able to give you a quick charge to get home with, and you can get or order a voltage regulator from them.

Later,
Mike R.

  ----- Original Message ----- 
  From: Doc 
  To: mbcoupes at mbcoupes.com 
  Sent: Tuesday, December 11, 2007 10:12 AM
  Subject: [W126 Coupe] All Indicator lights come on when Braking


  Thanks for all the ideas.
  I replaced the alternator for good messure about 2 years ago.  I am not losing power that I can see.
  I am at work unfortunately.  We'll see if the drive home becomes a nightmare or not.

  I went through a similar issues with a suburban, so I know the engine will drop after a couple blocks of driving if the alternator is literally shot.  Maybe it will get worse
  since the problem just started as I drove into the parking lot at work.


  Well if I can make it home, I might just pickup a new alternator and change it over the holiday for good measure.

  Any other thoughts would be welcome.......

  Thanks
  Rick Montgomery



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