Front door soft close not working
Thread Starter
Super Member
Joined: May 2008
Posts: 646
Likes: 16
15' W222
Front door soft close not working
Hi all, My back doors close automatically, but not the front. I think I read somewhere that disco'ing the battery may solve this. Is this true, any suggestions?
MBWorld Fanatic!
Joined: Dec 2006
Posts: 4,949
Likes: 39
From: Clifton, NJ
96 and 08 911 turbos
you can pull the 25 amp fuse under the passenger rear seat, but that is a temporary solution. It works if for whatever reason there was an obstruction and the pump timed out.
However, you most likely have a leak, or a bad pump.
However, you most likely have a leak, or a bad pump.
Newbie
Joined: Jul 2009
Posts: 10
Likes: 0
From: Suwanee, GA
2003 S430
I had this problem but only on the driver door.
Anyways, I just replaced the 25A fuse a few minutes ago and the problem is fixed now. Maybe its not a problem with the pump in my case.
Thank you OliverK so very much for the pointer.
Hope Trudawg has the same problem as I did.
Anyways, I just replaced the 25A fuse a few minutes ago and the problem is fixed now. Maybe its not a problem with the pump in my case.
Thank you OliverK so very much for the pointer.
Hope Trudawg has the same problem as I did.
Thread Starter
Super Member
Joined: May 2008
Posts: 646
Likes: 16
15' W222
I had this problem but only on the driver door.
Anyways, I just replaced the 25A fuse a few minutes ago and the problem is fixed now. Maybe its not a problem with the pump in my case.
Thank you OliverK so very much for the pointer.
Hope Trudawg has the same problem as I did.
Anyways, I just replaced the 25A fuse a few minutes ago and the problem is fixed now. Maybe its not a problem with the pump in my case.
Thank you OliverK so very much for the pointer.
Hope Trudawg has the same problem as I did.
Newbie
Joined: Jul 2009
Posts: 10
Likes: 0
From: Suwanee, GA
2003 S430
I am not sure if its a blown fuse or not. I just replaced it none the less and door started working ever since. Other doors never had a problem.
When I replaced the fuse while the car was off, door was still not working. So, I replaced the fuse while the car was on. That did it.
Like OliverK said, the replacement of the fuse might have taken care of a pump timing out due to an earlier blockage.
One other symptom that makes me believe mine could be a fuse/electric related problem is that the light behind the inside door handle would turn on and off when I was driving at night. As if there was a loose connection or so. I am yet to drive at night to see if this is fixed too.
When I replaced the fuse while the car was off, door was still not working. So, I replaced the fuse while the car was on. That did it.
Like OliverK said, the replacement of the fuse might have taken care of a pump timing out due to an earlier blockage.
One other symptom that makes me believe mine could be a fuse/electric related problem is that the light behind the inside door handle would turn on and off when I was driving at night. As if there was a loose connection or so. I am yet to drive at night to see if this is fixed too.
Last edited by aubie96; Aug 4, 2009 at 12:48 PM.
Senior Member
Joined: Oct 2008
Posts: 420
Likes: 3
From: Houston, TX
2002 Mercedes S 430(GONE), 2001 E320(GONE), 2007 S550(GONE), 2009 BMW X6(GONE), 2014 S550
In the morning i sat down in my car turn the engine on and after closing the door i heard pretty loud boom, after that happened my soft door closer didnt work, and if i try to close it it has continuous sound like motor working or something. Any suggestions?
By the way it was really hot outside today, like 106-108, could it be cause of problem?
By the way it was really hot outside today, like 106-108, could it be cause of problem?
MBWorld Fanatic!
Joined: Dec 2006
Posts: 4,949
Likes: 39
From: Clifton, NJ
96 and 08 911 turbos
no, hot temps should not cause the problem.
If none of your soft close stuff works, you either have a massive leak or a bad pump.
If its just one door, I'd say its a leak. Either way, the longer you keep at this, the chances your pump is fried go up exponenetially.
If none of your soft close stuff works, you either have a massive leak or a bad pump.
If its just one door, I'd say its a leak. Either way, the longer you keep at this, the chances your pump is fried go up exponenetially.
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MBWorld Fanatic!
Joined: Dec 2012
Posts: 2,475
Likes: 439
From: Ball Ground, GA (N of Atlanta)
2003 S500 2007 GL450
Find the floor light just behind the right rear passenger's heels. Pull the entire light unit away from the wall. Find the yellow fuse near the right side of the fuse row. With the engine running, remove the fuse for thirty seconds.
Try the door closing. If it works, drive on. If it quits working soon, there is a leak or another problem, probably inside the door.
If the problem is the plastic housing for the pneumatic diaphragm, it can sometimes be repaired. There are several YouTube videos on this repair.
Try the door closing. If it works, drive on. If it quits working soon, there is a leak or another problem, probably inside the door.
If the problem is the plastic housing for the pneumatic diaphragm, it can sometimes be repaired. There are several YouTube videos on this repair.
Super Member
Joined: Nov 2018
Posts: 604
Likes: 16
From: Atlanta, GA
2001 S500 (W220) / 2007 GL450 (X164)
What the hell?
I closed the door and heard a loud POP! Then I heard a hissing and the close assist wasn’t working. I tested it a few more times and it kept hissing but then even the hissing stopped and the close assist still wasn’t working 😩
MBWorld Fanatic!
Joined: Dec 2012
Posts: 2,475
Likes: 439
From: Ball Ground, GA (N of Atlanta)
2003 S500 2007 GL450
The pneumatic actuator for the "soft-close" system has failed. The operation is done with positive pressure, and the pressure has pushed the actuator apart.
It might be possible to repair the actuator with wire and epoxy - sometimes works, sometimes doesn't. There used to be vendors who sold the actuators or parts to repair the actuators - no idea whether this is still true or not. There are numerous threads in the BenzWorld Forum on repairing this problem.
The hissing stopped because the control module for the pneumatic system monitors the time required to do an operation. If the time required is longer than the allowed time, the system will stop performing the operation to protect the PSE pump.
It might be possible to repair the actuator with wire and epoxy - sometimes works, sometimes doesn't. There used to be vendors who sold the actuators or parts to repair the actuators - no idea whether this is still true or not. There are numerous threads in the BenzWorld Forum on repairing this problem.
The hissing stopped because the control module for the pneumatic system monitors the time required to do an operation. If the time required is longer than the allowed time, the system will stop performing the operation to protect the PSE pump.
Last edited by wallyp; Jul 26, 2021 at 08:43 PM.
Super Member
Joined: Nov 2018
Posts: 604
Likes: 16
From: Atlanta, GA
2001 S500 (W220) / 2007 GL450 (X164)
The pneumatic actuator for the "soft-close" system has failed. The operation is done with positive pressure, and the pressure has pushed the actuator apart.
It might be possible to repair the actuator with wire and epoxy - sometimes works, sometimes doesn't. There used to be vendors who sold the actuators or parts to repair the actuators - no idea whether this is still true or not. There are numerous threads in the BenzWorld Forum on repairing this problem.
The hissing stopped because the control module for the pneumatic system monitors the time required to do an operation. If the time required is longer than the allowed time, the system will stop performing the operation to protect the PSE pump.
It might be possible to repair the actuator with wire and epoxy - sometimes works, sometimes doesn't. There used to be vendors who sold the actuators or parts to repair the actuators - no idea whether this is still true or not. There are numerous threads in the BenzWorld Forum on repairing this problem.
The hissing stopped because the control module for the pneumatic system monitors the time required to do an operation. If the time required is longer than the allowed time, the system will stop performing the operation to protect the PSE pump.
MBWorld Fanatic!
Joined: Dec 2012
Posts: 2,475
Likes: 439
From: Ball Ground, GA (N of Atlanta)
2003 S500 2007 GL450
In the right-rear passenger floor area, find the floor lamp that is behind the passenger's heels. Pull the lamp from the carpeted wall (don't bother to disconnect it), and locate the yellow 20-Amp fuse toward the inboard end of the row. Remove it, make sure that it isn't blown and reinstall it. That resets the PSE control module. If the function operates for a few times and then shuts off again, there is a leak in that circuit.
Newbie
Joined: Dec 2022
Posts: 3
Likes: 0
2007 mbz s550
In the right-rear passenger floor area, find the floor lamp that is behind the passenger's heels. Pull the lamp from the carpeted wall (don't bother to disconnect it), and locate the yellow 20-Amp fuse toward the inboard end of the row. Remove it, make sure that it isn't blown and reinstall it. That resets the PSE control module. If the function operates for a few times and then shuts off again, there is a leak in that circuit.
