Hi gang, It seems to me that more than one or two RX's are developing problems with air suspension, where the system sticks on N with the 'off' light flashing. I've read stories about £2000 repair bills for complete pump assemblies! Scary huh? Well when i diagnostic check the system it says exhaust valve fault (yes there's an air exhaust valve on the pump unit) but when i dismantle it, clean it, re-assemble it then check it's operation with a test probe there seems to be nothing wrong with it, it's resistance is 3.2 ohms. But still it puts up the same fault code! Any ideas?