Pneumatic seat issues
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Joined: Aug 2018
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Various
After more investigation the pipe pictured is actually the input pipe for the pump so any hissing I've heard was air being sucked in. I've examine the pump again and can see no issues. I'm still getting the code 9250 for air leak but cannot see where or why. The system is holding pressure initially but as you use the buttons on the seats to inflate them the air starts to drop in the pump pressure reading but the pump doesn't seem to switch itself on again to replace it.
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2004 E55
@scrappy_doo Did you get anywhere with this?
Thread Starter
Junior Member
Joined: Aug 2018
Posts: 42
Likes: 1
Various
After removing and repairing the bladder on the seat with an iron (had to drill out the rivets on the side airbag first then re-rivet afterwards), still had the same codes for the pump. After stripping everything to check for more leaks and finding that open ended pipe I thought I'd struck gold. Unfortunately it turns out that is the way it should be as it's the inlet pipe for the pipe so sucks air in.
I examined the pump to check for any obvious issues but mind were found, in fact it was in tip top shape on the face of it with no melting like can often afflict them. I was feeling like if never find the fault but then one day casually browsing the eBay found a second hand pump for a good price but also with best offer option. I made a silly low bid to test the water and low and behold it was accepted. Once I received it I replaced mind with it and tested the seats. Voila the dynamic seats and massage now work, my old pump must have been weak despite it showing no obvious signs of issues on dismantling.
I examined the pump to check for any obvious issues but mind were found, in fact it was in tip top shape on the face of it with no melting like can often afflict them. I was feeling like if never find the fault but then one day casually browsing the eBay found a second hand pump for a good price but also with best offer option. I made a silly low bid to test the water and low and behold it was accepted. Once I received it I replaced mind with it and tested the seats. Voila the dynamic seats and massage now work, my old pump must have been weak despite it showing no obvious signs of issues on dismantling.
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From: SC
2005 E55 AMG
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