Naughty Lumbar support
Thread Starter
Newbie
Joined: Jul 2008
Posts: 24
Likes: 1
MB S320 CDI
Naughty Lumbar support
I'm hoping that somone might be able to shed some light on my tiresome lumber support fault on the front seats.
The car is a S320cdi 2000 and the lumbar support stopped functioning some while ago on both seats.
I had to remove the battery today and when replaced to my delight for a few minutes the air started pumping into the seats again, I know this is not an unheard of phenomenon however after a few minutes I was back to square one. No air.
Does anyone have any ideas on where I should be making some investigations?
Thx in adavance.
B320
The car is a S320cdi 2000 and the lumbar support stopped functioning some while ago on both seats.
I had to remove the battery today and when replaced to my delight for a few minutes the air started pumping into the seats again, I know this is not an unheard of phenomenon however after a few minutes I was back to square one. No air.
Does anyone have any ideas on where I should be making some investigations?
Thx in adavance.
B320
MBWorld Fanatic!
Joined: Mar 2006
Posts: 4,278
Likes: 378
From: San Jose area
'19 E63S sedan
I'm hoping that somone might be able to shed some light on my tiresome lumber support fault on the front seats.
The car is a S320cdi 2000 and the lumbar support stopped functioning some while ago on both seats.
I had to remove the battery today and when replaced to my delight for a few minutes the air started pumping into the seats again, I know this is not an unheard of phenomenon however after a few minutes I was back to square one. No air.
Does anyone have any ideas on where I should be making some investigations?
Thx in adavance.
B320
The car is a S320cdi 2000 and the lumbar support stopped functioning some while ago on both seats.
I had to remove the battery today and when replaced to my delight for a few minutes the air started pumping into the seats again, I know this is not an unheard of phenomenon however after a few minutes I was back to square one. No air.
Does anyone have any ideas on where I should be making some investigations?
Thx in adavance.
B320
Senior Member
Joined: Mar 2003
Posts: 342
Likes: 39
From: Covina,CA
2010 W204, 2014 W212, 2015 W222, 07 SAAB 9-3, 2016 AMG GTS
I have the same problem, Its the PSE pump that locate inside your trunk ! The PSE pump support the air for your seat, door(soft close) and the trunk(open & close,if you have this option). You can buy a new one from dealer for about $700, you can put it on yourself, but after install the new one, you need Mercedes Star computer to start it up, otherwise ,Not working !! Or you can buy a used one from ebay for about $250, then you don't need the Star system from dealer. Just start up the car and wait for a min, it should work. Let me know if you need a PSE pump, I have one for sale for $220 shipped ( I order it from ebay and later I found out some tube is leaks air, because I try to pull fuse and disconnect battery, not things happen. but you said yours will work for a while after disconnect the battery, so you don't have a leak or burn fuse!) Let me know!!
Thread Starter
Newbie
Joined: Jul 2008
Posts: 24
Likes: 1
MB S320 CDI
Guys
Many thanks for your input.....It's a leak I think - If I listen carefully I can hear the barely audible hiss from under the drivers seat.
Further investigations to be made....
Watch this space.
B320
Many thanks for your input.....It's a leak I think - If I listen carefully I can hear the barely audible hiss from under the drivers seat.
Further investigations to be made....
Watch this space.
B320
Thread Starter
Newbie
Joined: Jul 2008
Posts: 24
Likes: 1
MB S320 CDI
Happy days or so it would seem. The small expansion reservoir under the seat had a small crack around the rubber seal.
Painted and filled liberally with fiberglass resin and I'm back in business (or off to the stealers for a replacement!)
Only time will tell - but you gotta try eh?
Thanks again
B320.
Painted and filled liberally with fiberglass resin and I'm back in business (or off to the stealers for a replacement!)
Only time will tell - but you gotta try eh?
Thanks again
B320.
