New PSE pump, everything works!
Thread Starter
Junior Member
Joined: Sep 2022
Posts: 33
Likes: 3
Range Rover, R129
New PSE pump, everything works!
Hi gang,
So I recently threw a used PSE pump into my S500 and everything works. HOWEVER, the passenger side rear door will only lock. When unlocking it stops about half way and won't fully unlock. If I BARELY lift with my fingers while unlocking then it'll go all the way.
What might be the best place to start looking? Soft close works, trunk works, lumbar etc.
Thank you for any advice. It's the side of the car my baby sits in his car seat, so the door gets used a lot.
So I recently threw a used PSE pump into my S500 and everything works. HOWEVER, the passenger side rear door will only lock. When unlocking it stops about half way and won't fully unlock. If I BARELY lift with my fingers while unlocking then it'll go all the way.
What might be the best place to start looking? Soft close works, trunk works, lumbar etc.
Thank you for any advice. It's the side of the car my baby sits in his car seat, so the door gets used a lot.
Super Member
Joined: Dec 2007
Posts: 980
Likes: 225
2005 S500 Designo
Hi gang,
So I recently threw a used PSE pump into my S500 and everything works. HOWEVER, the passenger side rear door will only lock. When unlocking it stops about half way and won't fully unlock. If I BARELY lift with my fingers while unlocking then it'll go all the way.
What might be the best place to start looking? Soft close works, trunk works, lumbar etc.
Thank you for any advice. It's the side of the car my baby sits in his car seat, so the door gets used a lot.
So I recently threw a used PSE pump into my S500 and everything works. HOWEVER, the passenger side rear door will only lock. When unlocking it stops about half way and won't fully unlock. If I BARELY lift with my fingers while unlocking then it'll go all the way.
What might be the best place to start looking? Soft close works, trunk works, lumbar etc.
Thank you for any advice. It's the side of the car my baby sits in his car seat, so the door gets used a lot.
Thread Starter
Junior Member
Joined: Sep 2022
Posts: 33
Likes: 3
Range Rover, R129
The door locking/unlocking systme share an air network. There is a leak somewhere. One is negative pressure, the other positive pressure. I'm not sure which is which, but leaks will affect one before the other (seems unlocking might be negative pressure?). Anyway, you have a leak and have to find it.
I figured checking at the PSE pump is the easiest place to start as far as accessibility. For the door do I have to remove the entire door card? Also, what diagnostic process do I do to find the air leak? Soapy water?
Junior Member
Joined: Apr 2009
Posts: 53
Likes: 3
From: San Diego, CA
06 S430
Yes, lubrication helps tremendously in a weakened air flow that is barely strong enough to pressurize at all. A bit off topic but while you're lubricating, it doesn't hurt to clean the sunroof track and lubricate it as well.
Super Member
Joined: Jun 2018
Posts: 533
Likes: 39
From: Northern Hemisphere - Chicago
fleet
)for me) in my low to mid level amazon scanner it can do the pse test and clearly tells me my trunk circuit is leaking air
