Troubleshooting Range Rover P38A Climate Control
I came across this posting on another message board and it seemed like it was worth cleaning up and reposting here. On the P38A Range Rovers, there is a warning symbol that may appear on your climate control display. According to the manual, the system is constantly self-diagnosing for faults and the “handbook symbol” will appear, when one of these is found. IF you don’t have access to a testbook or dealer and you want to diagnose this a little bit, here is a good collection of preliminary steps you can take.
Before you do anything, you should check the relays under the hood on the passenger side. Look for brown spots on the ones that are linked to the heating/cooling/fans/etc....I had an intermittent situation with the warning symbol coming on and quirky heating/cooling problems and found that nearly all of the yellow relays had brown spots from overheating and then malfunctioning. Click here to download a PDF on where to go from there: P38A Climate Control
Before you do anything, you should check the relays under the hood on the passenger side. Look for brown spots on the ones that are linked to the heating/cooling/fans/etc....I had an intermittent situation with the warning symbol coming on and quirky heating/cooling problems and found that nearly all of the yellow relays had brown spots from overheating and then malfunctioning. Click here to download a PDF on where to go from there: P38A Climate Control
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