On Thursday I had little option to avoid a flooded road. I could see looking at the water level against the fence between the road and adjacent field that it was probably only around a foot or so deep but to be sure selected off road height. The car went up as it should and I drove through fine. As I sped up it automatically returned to standard height then I got the 'bong' of doom and orange warning symbol accompanied by only normal ride height available, this then cleared the next time I stopped and started the vehicle. Checked fault codes this morning and got the following faults.

ABS-Brake Module

U0421-68 (2 Invalid data received from ride level control module - Algorithm based failure - event information
( on 21-01-2021 13:11:41 at 125172 mi )

RLM-Suspension

C1A20-64 (6 Pressure increases too slow when filling reservoir - Algorithm based failure - signal plausibility failure
( on 21-01-2021 13:11:41 at 125172 mi )

As both timed exactly same time I'm thinking its the second that's the problem and that's causing the first??

Does anyone have any ideas??

Am I looking at a new compressor??

For me not a great problem as only ever changed height a few times but want it working if I need it in anger.

Thanks

Dry it out. Clear the fault codes. Let it go to sleep Dry it out some more. Clear the fault codes again. Sleep.
Dry it out a bit more and I bet they all go...

Thanks, I'll just kepp an eye on it for now. Found the following site

http://4x4airseals.com/shop

Lots of parts available and some do mention the fault code C1A20-64, not sure if mine is Hitachi or AMK as close to change over i think. Don't fancy emptying boot to look today as bloody freezing. Will take a look later this week,