L322 2003 L322 Air Suspension Inactive

Hello all, I am new to the forum and had my RR L322 for a few months, just had new front discs and pads fitted and new all weather tyres fitted all round, also had new front air shocks in September, vehicle is all standard no modifications. Just after the brakes and tyres were fitted I drove home and via a short cut ! Encountered several speed humps, just after the last speed hump the air suspension inactive message popped up on the dash and no lights shown on the height selector switch. Checked all fuses and tried a few of the you tube fixes but system stays inactive. Looks like the EAS needs to be reset, however I will try to replace the EAS relay before a trip to the garage. Any help or a ideas greatly appreciated.

Check the abs sensors are working and fitted correctly.

also check your Tyre pressure had this and one tyres was slightly down due to a slow puncture

Thank you for the tips I will check the tyre pressures and abs sensors, may be fitting the new front discs disturbed the sensors

You can get random faults after being jacked up as the height sensors extend to parts of the track that are not normally used and could also be one of the tiny cables that attach to them has become dislodged. It may just need a reset using diagnostics like Allcomms or IID or the like. Without diagnostics you could be searching for days and find nothing and it's an expensive hobby changing out parts without knowing they are faulty. If you are keeping it then good diagnostics will pay for themselves very quickly

Thank you for the reply I will checkout the settings via the diagnostic tool again, the message I had when trying to change height using the diag tool was "height setting inhibited" "Car lift jack switch" message screen shots attached, I will have another's go later this week, also an articulation validity fault and height sensors all over the place !

Will your diagnostics let you clear faults as well as read them as you have a hard fault with no lights on the selector switch that needs clearing which may return immediately if there is still a fault. The heights look odd but I'm not certain diagnostics always report heights that seem realistic.
The validity fault points towards a height sensor, if they have been removed they can get put back on with the elbow joint facing the wrong way

Fault traced to a faulty height sensor on rear offside, it looks like the sensor failed/broke when the car was jacked up for changing tyres. Sensor replaced and is is now well again. I used CSG Automotive in Macclesfield to fit the new sensor, apparently when the height sensor is at full scale (car jacked up) and its now 14 years old they can fail/brake, dont suppose there is much you can do to prevent this when jacking the vehicle up, other than lubrication of the sensors movable joints. On the point of jacking the vehicle up for tyre change is there a particular proceedure? Thx for your help and comments cheers Andy

Other than usual precautions like axle stands and chocking the wheels, you should have some nice metal ones in the boot, i have always just jacked mine up and put an axle stand under it. if you leave a door open it can stop the height trying to adjust itself but then my door flew open and hit a wall or if it doesn't do that the battery will probably go flat. if i am going to be working underneath I will put an axle stand under all four corners incase it decides to deflate while i'm under it but in the years i have had mine, and most of those it has been jacked up, it hasn't tried to adjust with the ignition off.
Oh and good news, nice cheap little fix