Thread: D4 Suspension Compressor over temperature warning

You need to avoid changing heights unnecessarily as the compressor seems to be only for occasional use. The system pressurises a reservoir to a much higher pressure than required by the air-springs and this overheats the compressor very quickly. It might be acceptable in cold climates.

I think the small high-pressure reservoir is a bad design and I may unplug the electrical connector to the reservoir valve. By doing this, the compressor will not be pumping at high pressures and thus not generating the heat, but will have to pump the air-springs any time a height increase is required.

Hi David,

It's not a fault, the system just wasn't designed to make full range movements too often. Whilst there seems to be a lot of variation between vehicles on the speed the system moves to off-road height, there can also be variations on the one car. In other words, some days mine will extend quicker than others.....daily temp and how much it's been used, etc, I imagine.

Cheers,

Kev.

Going from off-road to access and back again a few times will heat it up quite quickly. You can remove the lower plastic cowling around the compressor to help cool it down - the sound absorption material in there also works as a great thermal blanket!

Cheers,

Gordon

just so you no,, the comperssor cuts out at 120deg, so yes it is very hot,

Is that temp for the brushes temp sensor or the compressor head temp sensor and which one gets hot first?