Tetsu0san Posted February 14, 2021 Share Posted February 14, 2021 Hi all I have a late P38 diesel and the air suspension is playing up a bit. When it's driving and the engine started it works OK, but when you park it up the suspension will drop overnight. Well, when I say overnight it varies, sometimes it will do it over one night, other times it will hold up for days (it only gets driven once or twice a week). In its history it's had a couple of air bags changed as well as height sensors, but obviously that doesn't really meany anything. What are your thoughts? I don't really want to put it on springs as I think the air suspension is great, and as I am (unfortunately) going to have to sell it soon I'd like the suspension to work. Cheers Quote Link to comment Share on other sites More sharing options...
elbekko Posted February 14, 2021 Share Posted February 14, 2021 Could be many things. Bags, o-rings in the valve block, ... Step one is replacing the big black EAS relay with a regular 4-pin yellow relay, so it stops auto-levelling overnight. Then you can see which side drops down and look further in more detail. 1 Quote Link to comment Share on other sites More sharing options...
Tetsu0san Posted February 14, 2021 Author Share Posted February 14, 2021 3 hours ago, elbekko said: Could be many things. Bags, o-rings in the valve block, ... Step one is replacing the big black EAS relay with a regular 4-pin yellow relay, so it stops auto-levelling overnight. Then you can see which side drops down and look further in more detail. That sounds like an excellent place to start. I'll have a look at that later. Cheers Quote Link to comment Share on other sites More sharing options...
Tetsu0san Posted March 18, 2021 Author Share Posted March 18, 2021 On 2/14/2021 at 9:24 AM, elbekko said: Could be many things. Bags, o-rings in the valve block, ... Step one is replacing the big black EAS relay with a regular 4-pin yellow relay, so it stops auto-levelling overnight. Then you can see which side drops down and look further in more detail. Sorry, me again. Is it 'safe' to remove it as is or should I remove the battery or do something else? Don't really want to end up with an error that needs to be cleared with hardware that I don't have. Cheers Quote Link to comment Share on other sites More sharing options...
elbekko Posted March 18, 2021 Share Posted March 18, 2021 Yeah, no worries to remove it. I've done it while driving even to prevent a soft fault from becoming a hard fault. Quote Link to comment Share on other sites More sharing options...
Escape Posted March 18, 2021 Share Posted March 18, 2021 Yeah, removing the timer relay is no different than having a fuse blow. The P38 is not as difficult as people think, it takes quite a lot before it throws a hard fault. I have a switch in mine to disable the EAS while driving, never gave an error. (for the record, the switch was installed at a time when I didn't have the means to do a proper fix but needed the car on the road and reliable). Filip Quote Link to comment Share on other sites More sharing options...
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