91 200q ABS /electrical

[quk@sievers.com (Phil Payne)]

In message <32D29995.7EA8@earthlink.net> Sargent Schutt writes:

> Third Prob (and possibly related to the first): The 'worn pad' indicator
> light is always on, though the pads are not worn, and the sensors on the
> pads are fine. A break in the wire somewhere? Related to #2?

Depending on the car, that light might mean more than just worn pads.  Check 
the brake fluid reservoir, and if that doesn't help and you have a sensor on 
the back of the master cylinder, pull the wires and see if the light goes out.  
If it does, it's low hydraulic pressure.  These cars are all different - check 
the driver's handbook or service documentation for _exactly_ what that light 
means.  

> There's also a lot of unusual electrical 'clicking' noise coming from
> behind the driver's knee bolster. This is where a lot of relays are
> placed in my 86. Apply the brakes = 2 clicks. Turn Signal = random out
> of cadence clicks. Sounds like something's shorting out.

Seat heater switched on for an unoccupied seat?

> The warning/indicator screen goes psychadelic after driving for 15-30
> minutes.

Check chassis grounds on the sidewall under the fusebox, in the engine bay and 
any brown wires attached to the engine.  Some of the instruments have dedicated 
ground circuits and bad ones confuse the display.

Phil