Thread: Suspension will raise when system cooled - only just started car

I suggest that you remove the 20A suspension system fuse from the engine bay fuse panel momentarily to force a restart of the suspension ecu then try again. I can't think of a way to bypass the message.

I tried that but it didn’t change anything.
There is actually no sound coming from the compressor from the moment I start the car as if no power is getting to it but I switched the fuse so it can’t be that.

Unless the heat sensor is stuck/broken so it’s preventing it from even starting.

Is this a removable sensor? Conscious it’s a weekend and I’m a long way from a decent mechanics

Accordling to the wiring schematics the suspension pump has 2 temp sensors 1 for comp and 1 for comp motor which is integral to the pump unit.

Regards

Im convinced that unless there is another error which would cause the overheating warning then the sensor has failed. Is there a way to disconnect either of them?

The only other thing I can think of is pulling the whole compressor out and seeing if it powers up from a spare battery just to rule out complete failure

I would unplug CO781 6 pin plug from the unit and measure the resistance of
2-5 and 3-6 to the pump sensors. Ohms reading should be the same.

A short to ground of a sense wire could cause the incorrect temperature. Unplugging the connectors at the compressor should get rid of the high temperature warning but if not then a short somewhere between there and the suspension module.

I unplugged the sensors connector but it throws a suspension fault immediately so it doesn’t allow me to raise the car.
Looks like it’s a 3 hour drive home on access height..

Also where and what is the suspension module?

If I disconnect the power connector and connect my own source of power will that lift the car? Or would that be pointless because the valve block might not be activated in the correct sequence and thus could cause damage?