Keyless go trunk and door locks stopped working
Thread Starter
Newbie
Joined: Jul 2011
Posts: 13
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2004 Cadillac DTS
Keyless go trunk and door locks stopped working
I have a 2005 S 500 with 62,xxx miles. It has push button start, keyless go, power trunk closer. Today, my trunk will not open with the remote, nor with the power button on the door, nor with the button above the license plate. The only way to open my truck is to use the key on my key fob. This sounds silly because there was a time in life when you only used a key to open your trunk. LOL. Oh, I later found out that I can't lock my doors either. I can't lock them with the key fob, the door lock button on the dash, nor the button on the door handles. Does anyone know what's going on? Does a fuse need replacing or the battery in my key fob? I'm baffled. Thanks.
Member
Joined: Jul 2015
Posts: 100
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2005 S500
PSE pump.
unless its like mine currently where its all the door actuators and locks took a crap on me including the trunk.
be ready to spend over $4k if its all the doors if its just the PSE pump around $1k lol
unless its like mine currently where its all the door actuators and locks took a crap on me including the trunk.
be ready to spend over $4k if its all the doors if its just the PSE pump around $1k lol
MBWorld Fanatic!
Joined: Jun 2002
Posts: 1,284
Likes: 37
From: North Carolina
2003 S500 - Toyota Corolla (in the rain)
It is very unlikely that all the door lock and trunk actuators would break down at the same time. If they don't work it is caused by something else. Pull the fuse for the PSE pump. It is located behind the light under the passenger rear seat. Just pull the lens off of the light and you will see the fuse behind that lens.
The fuse for the PSE pump is the yellow one. Remove the fuse and wait about 15 minutes to reinsert it. Then see if things start working again.
The fuse for the PSE pump is the yellow one. Remove the fuse and wait about 15 minutes to reinsert it. Then see if things start working again.
Member
Joined: Jul 2015
Posts: 100
Likes: 1
2005 S500
It is very unlikely that all the door lock and trunk actuators would break down at the same time. If they don't work it is caused by something else. Pull the fuse for the PSE pump. It is located behind the light under the passenger rear seat. Just pull the lens off of the light and you will see the fuse behind that lens.
The fuse for the PSE pump is the yellow one. Remove the fuse and wait about 15 minutes to reinsert it. Then see if things start working again.
The fuse for the PSE pump is the yellow one. Remove the fuse and wait about 15 minutes to reinsert it. Then see if things start working again.
Thread Starter
Newbie
Joined: Jul 2011
Posts: 13
Likes: 1
2004 Cadillac DTS
I will try it. Thanks
It is very unlikely that all the door lock and trunk actuators would break down at the same time. If they don't work it is caused by something else. Pull the fuse for the PSE pump. It is located behind the light under the passenger rear seat. Just pull the lens off of the light and you will see the fuse behind that lens.
The fuse for the PSE pump is the yellow one. Remove the fuse and wait about 15 minutes to reinsert it. Then see if things start working again.
The fuse for the PSE pump is the yellow one. Remove the fuse and wait about 15 minutes to reinsert it. Then see if things start working again.
MBWorld Fanatic!
Joined: Jun 2002
Posts: 1,284
Likes: 37
From: North Carolina
2003 S500 - Toyota Corolla (in the rain)
IDFWU I could see where your PSE pump would fail thus causing the door soft close and trunk to stop working but I just don't see all four door locks failing at the same time. You should have asked them to return the broken parts to you just to prove that they were actually replaced.
I have had a couple of instances when I asked that question they gave me the deer in the headlights look. Totally unexpected.
I have had a couple of instances when I asked that question they gave me the deer in the headlights look. Totally unexpected.
Member
Joined: Jul 2015
Posts: 100
Likes: 1
2005 S500
IDFWU I could see where your PSE pump would fail thus causing the door soft close and trunk to stop working but I just don't see all four door locks failing at the same time. You should have asked them to return the broken parts to you just to prove that they were actually replaced.
I have had a couple of instances when I asked that question they gave me the deer in the headlights look. Totally unexpected.
I have had a couple of instances when I asked that question they gave me the deer in the headlights look. Totally unexpected.
At first they replaces the pump, bc it was saying it was leaking air in the trunk section, so they replaced the pump same thing was happening after, then trunk lock and actuator, so after it said the doors are leaking, well in the end they diagnosed that all 4 doors have taken a poo, after that they wanted to make sure and took it to the dealership, well apparently the previous owners got rid of the car bc they didnt want to spend over $7k in parts and labor, so now im stuck with the car lol
so 4 doors locks are broken, and 2 of the soft close pumps are done also lol. Even my mechanic and the stealership saidm they have never seen all 4 go out at once, usually its like 2 then over time another one and so on, but not all 4.
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MBWorld Fanatic!
Joined: Jun 2002
Posts: 1,284
Likes: 37
From: North Carolina
2003 S500 - Toyota Corolla (in the rain)
It is sounding more like your PSE pump has gone. Can you lock the doors from inside the car with the lock button that is on the dash? Also, do you hear any kind of hissing sounds coming from the doors?
Thread Starter
Newbie
Joined: Jul 2011
Posts: 13
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2004 Cadillac DTS
The only way to lock the doors is to push each *** on each door. No locking mechanism work. When I press the dash button, I hear a sound, but nothing happens. My doors no longer lock at speed. I bought a new Buick Skylark in 1986 without power door locks and said I'd never own a vehicle without power locks again. Guess what? I've been sent back to 30 years ago technology. My 1993 Lexus LS 400 still has working power door locks and trunk.
Last edited by cedric1983; Aug 18, 2015 at 06:54 PM.
Newbie
Joined: Apr 2008
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C350
Cedric1983, were you able to figure out whether it was just the PSE pump? I am having the exact same symptoms. Dead door locks and no soft close but can hear the pump motor running when you try to lock/unlock the doors using the FOB key. I read elsewhere that the PSE pump has some plastic valves and housing internally that can melt if the pump overheats or runs more than it should (likely due to a leak in one the system). I pulled out the pump, opened it up and sure enough one of the two main valve lines was melted. Getting to the pump and removing it was very easy. I have ordered the PSE pump and will put it in later this week. Hopefully that will fix that issue.
FYI, I also read that the new pump may need to be programmed via the Star system. Not sure if anyone here has any insight as to whether programming is necessary.
FYI, I also read that the new pump may need to be programmed via the Star system. Not sure if anyone here has any insight as to whether programming is necessary.
Thread Starter
Newbie
Joined: Jul 2011
Posts: 13
Likes: 1
2004 Cadillac DTS
Cedric1983, were you able to figure out whether it was just the PSE pump? I am having the exact same symptoms. Dead door locks and no soft close but can hear the pump motor running when you try to lock/unlock the doors using the FOB key. I read elsewhere that the PSE pump has some plastic valves and housing internally that can melt if the pump overheats or runs more than it should (likely due to a leak in one the system). I pulled out the pump, opened it up and sure enough one of the two main valve lines was melted. Getting to the pump and removing it was very easy. I have ordered the PSE pump and will put it in later this week. Hopefully that will fix that issue.
FYI, I also read that the new pump may need to be programmed via the Star system. Not sure if anyone here has any insight as to whether programming is necessary.
FYI, I also read that the new pump may need to be programmed via the Star system. Not sure if anyone here has any insight as to whether programming is necessary.
