Got a bit of a problem where the rear suspension will slowly go down to the bumpstops if left for a couple of days.

When running, it raises to the correct heights, but while idling you can hear the compressor kick in every now and then.

I've plugged the code reader in and it's coming up with a faulty front left height sensor C1A03. Is this likely to cause the rear to drop?

I was thinking more of a leak somewhere? Both sides go down equally...

Any ideas?

Thanks!

You almost definitely have a leak; possibly a sensor issue too. Get the leak fixed, clear the codes then see if the sensor fault re-appears. If you still have a sensor fault you'll need a new sensor.

You need to address this because while the compressor will make up for it for a while, the hole will gradually worsen until the compressor can't keep up - which will put you on bumsptops all round and limp mode. Which is about as comfortable and fast as riding a piano down that cobbled road in the Hovis advert.

Also; and this is key; when the weather worsens in Autumn and it gets a bit cold there are always a bunch of people who get air suspension leaks (usually front left as that's the corner that takes the most punishment - potholes /side of road) - the weather gets cold making the rubber brittle and splits/leaks more likely to appear. Just watch in September / October after the first few freezing nights ...

Good luck!..


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Last edited by Range Rover L322 on 11th Aug 2020 11:01pm. Edited 2 times in total

Thanks for the reply RRL322!

Looks like I'll have to get it over the pit then, which won't be fun as I've got my Defender in bits over it at the moment!

Will do some research about how to find the leak; I assume washing up liquid solution in a spray bottle and follow the pipes from the airbags?

Well the saga continues and I've not even managed to get it in the garage yet!

Today was the first time I had started it up for a couple of weeks (been on trickle charge during this time). It started up and ran fine. However, the rear suspension will not lift off the bump stops at all. The front will go up and down fine, however, after a couple of minutes an error message pops up, saying something along the lines of "obstruction in way - extended mode activated".

Any pointers or ideas before I start dismantling it?

Others might be able to give more info than me, but I've heard that if you are in off road mode and the car gets beached the suspension will go into extended mode to try and clear the obstruction. The only way, as I see it, that it can do this is from the sensors. Are all the sensors attached properly?

Thanks Kevin - I'll have a look at the sensors.