SOURCE: very noisy squeky fron suspension on jaguar xj8
You might need a lube job or you may need to see if noise is coming from another place such as your engine water pump, brakes, power steering. Look for leaks.
Many things will cause the air fault to come on...I have yet to ever see the retention tank ever needing to be replaced...But if or when it was installed the neg battery terminal should have been disconnected always.I assume the code c2302..Under the hood is a relay #4 on the passenger side ..check it and make sure the fuse is good.Second,the system has parameters in the air suspension module with regards to the time for compressor to fill the reservoir.
Something like 3 minutes to hit 14.4 bar. If it takes longer, the asm will store code C2302. Easy to diagnose. C2303 is more of a problem as it is for air leak. If you come out and see the car sitting on the ground, you may want to tow it. As long as suspension is up, ok to drive. Either way, take it in soon .
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