Hydreliox

Back story may or may not be relevant.

Had to do a drive out for my job the other day and ended up on a badly surfaced back road. As such I slowed right down doing no more than 30 mph down to 10 mph or so over potholes and extremely rough paving.

Once getting to the end of the same road on my return journey I noticed a malfunction warning relating to the Airmatic on my dash.

I have pulled the following code: 557200: The correction time when filling is too long. Observing data the only thing that stands out to me and seems consistently different is the mV of right and left rears, as follows (parked on flat ground).

Left rear vehicle level - 41mm
Signal voltage of left rear component B22/7 left rear level sensor - 2176mV
Right rear vehicle level - 84mm
Signal voltage of right rear component B22/10 right rear level sensor - 3490mV

My ride height and feel is now inconsistently locking. The sequence of events seems to be:

1. Run flat indicator warning (tyres all correct and up to pressure)
2. Malfunction warning appears on dash
3. Ride height increases and becomes very firm
4. Restart ignition and ride height drops and returns to normal ride feel.
5. Return to step 1.


​​​​​Any advice on what to look for and where to begin the diagnosis would be helpful, or information I need to know should I have to take it in for repair. If more information is required then please just let me know what I need to provide.

Thanks
Jim

Hydreliox

After doing some reading....

Is it possible the tyre warning is triggered due to a difference in suspension height on the vehicle? From what I have read the tyre system measures rotational speed. Figured that if one side of the car is higher than the other then wheels will be rotating at different speeds?

Any thoughts on that or my OP?

Thanks


E2A In case it is something as simple as a wiring issue on the relief valves...where do I need to look?

konigstiger

Code aside one place to start, visually inspect level sensors (current part # 2129052902).

Hydreliox

just managed to finally get my head under. The metal arm on this part has broken (in fact, it looks like delrin). Will inform my service tech as it was going in this weekend anyway! Thanks for the info and hopefully this was the issue!