Re: 164 Control Unit Location - Sensors Help
Thanks for the reply, I know that the warning lights are not to come on unless a sensor makes contact or a circuit sends a ground to the light on the dash.
My problem is that I purchased the car and realised that when I replaced the cooland and cleaned up the float switch the light that tells you min level didn't turn on. So I wanted to know if the warning lamps were actually waring me or not.
I went on almost each sender (Brake Pad Wear, Water Level, Coolant Max Temp) and simulated a fault by either disconnecting the sensor, or earthing the connection (Brake pad wear example).
Unfortunately nothing worked even the brake light (I used no bulb rather than faulty so my mistake). Checked all connections, all seamed fine.
Now yesterday all of a sudden the Hydraulic warning turned on but there is hydraulic in the tank, the float switch is ok, I even disconnected the sensor (reading no contact = Max) and the light just wouldn't go off.
I'm exhausted trying to find answers, I guess I have to take it to a Specialist unless the warning lights pass throuhg the ECU ! Ironically the Parking brake light works fine !