Hello, I’ve got a 2011 Cayenne Turbo with air suspension issues. The cold temperatures in the NE have triggered the Chassis Failure warning. The driver front and driver rear sags overnight. Driving the car and letting the compressor run usually clears the dash warning issue but it consistently sags on the driver side overnight.
I recently purchased a Foxwell NT530 to help troubleshoot. I’m still navigating through all the menus but can share the following:
000284 control position not adjustable, vehicle too high or too low
000312 battery positive voltage, below limit value
000257 pressure sensor, signal line short circuit to B+
000201 compressor relay, on time exceeded
000220 vent solenoid valve, on time exceeded
System pressure 2.8
System air quality 68
Front left spring strut pressure 12.50
Front right 2.91
Rear left 2.64
Rear right 2.91
Heights deviation from required level
Front left -39mm
Front right -33
Rear left -32
Rear right -27
It’s nearing 200k miles and I’m open to replacing the struts/bags, valve block, compressor and relay all at once but prefer to truly isolate the issue first.
Its supposed to be warm this weekend so I plan to spray soapy water around the components to check for leaks.
Based on the trouble codes, any pointers on what may be happening?
