Locking/Unlocking Features: How do they work?
Thread Starter
Out Of Control!!
Joined: Jun 2003
Posts: 14,362
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From: Staples Center
w211 & w124
Locking/Unlocking Features: How do they work?
Okay guys, bear with me because this is my first car in at least 10 years that didn't have remote keyless entry...with that said here is my question.
How does the locking system work? I read the manual and according to it, I am supposed to be able to lock and unlock all of the doors with the key from either front door or the trunk. I am also supposed to be able to close the windows and sunroof with a turn-and-hold of the key in the driver's side door. ..
...none of that actually works on my car. The only thing that does work is locking/unlocking all doors through the driver's side door. None of the other key features work.
What am I doing wrong? Is there somewhere that it is disabled? I only have one key but it is the master key because it is squared off on the top and it can unlock both the trunk and the glove compartment.
Please help...
How does the locking system work? I read the manual and according to it, I am supposed to be able to lock and unlock all of the doors with the key from either front door or the trunk. I am also supposed to be able to close the windows and sunroof with a turn-and-hold of the key in the driver's side door. ..
...none of that actually works on my car. The only thing that does work is locking/unlocking all doors through the driver's side door. None of the other key features work.
What am I doing wrong? Is there somewhere that it is disabled? I only have one key but it is the master key because it is squared off on the top and it can unlock both the trunk and the glove compartment.
Please help...
Super Member
Joined: Jul 2005
Posts: 717
Likes: 1
From: Manassas, VA, USA
2011 VW cc, 2004 ML350
I'm not 100% certain how all of that works, but I thought I'd share my experiences with mine. When I bought it, I could lock or unlock all doors with the key from either the driver's or front passenger's door, but not the trunk. I discovered the 'hold the key' window thing by accident, but it also worked from both front doors and not from the trunk. Unlocking or locking the doors did lock and unlock the trunk, just not the other way around. Well, I had my starter replaced last week and in the process they had the battery disconneted for four hours. When I picked up the car, I took it home and locked the doors from the driver's door with the key as always. But I forgot to get my old starter out of the trunk. So when I unlocked the trunk to get it, all the doors unlocked. I tried it again, and sure enough now I can lock and unlock the doors from the trunk. I tried the window thing from there and it worked too. I called the shop and asked what they did to fix it and the guy said they didn't do anything to it. He explained that the central locking system used a complicated array of switches, relays, and vacuum actuators to do all the stuff it does and that sometimes things get a little out of synch. He figures that having the battery disconnected for a while and then reconnected may have reset a switch or relay that was not playing well with others. It all works now and I love it! I guess what I'm trying to suggest is maybe try disconnecting the battery for a while and see if anyhting resets.
Super Member
Joined: Mar 2006
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From: Anaheim
MB 300E | BMW M Coupe
My gas tank door locks whenever my car is locked....yes even the gas tank door has its own lock. Did you guys also know that you can keep your trunk locked whenever you unlock or lock your car by locking it through the driver or passenger side door? All you have to do is lock the trunk with the key, using the trunk key hole, and take out the key when its horizontal rather than verticle.
-OG
-OG
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Joined: Apr 2006
Posts: 3,062
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From: Houston, Texas
Dora the Explorer
Okay guys, bear with me because this is my first car in at least 10 years that didn't have remote keyless entry...with that said here is my question.
How does the locking system work? I read the manual and according to it, I am supposed to be able to lock and unlock all of the doors with the key from either front door or the trunk. I am also supposed to be able to close the windows and sunroof with a turn-and-hold of the key in the driver's side door. ..
...none of that actually works on my car. The only thing that does work is locking/unlocking all doors through the driver's side door. None of the other key features work.
What am I doing wrong? Is there somewhere that it is disabled? I only have one key but it is the master key because it is squared off on the top and it can unlock both the trunk and the glove compartment.
Please help...
How does the locking system work? I read the manual and according to it, I am supposed to be able to lock and unlock all of the doors with the key from either front door or the trunk. I am also supposed to be able to close the windows and sunroof with a turn-and-hold of the key in the driver's side door. ..
...none of that actually works on my car. The only thing that does work is locking/unlocking all doors through the driver's side door. None of the other key features work.
What am I doing wrong? Is there somewhere that it is disabled? I only have one key but it is the master key because it is squared off on the top and it can unlock both the trunk and the glove compartment.
Please help...
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MBWorld Fanatic!
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From: Boston
is a German Tank
I cannot do this no matter how hard try. When I first bought my car both front driver and passanger doorlocks where inopperable. I can only lock/unlock my car using the rear hatch lock.
and perhaps at one point I would have been able to do this, when my rear hatch would electronicaly lock (Te owners know what I'm reffering to) itself but it no longer does that as well.
Short maybe??
and perhaps at one point I would have been able to do this, when my rear hatch would electronicaly lock (Te owners know what I'm reffering to) itself but it no longer does that as well.
Short maybe??
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Thread Starter
Out Of Control!!
Joined: Jun 2003
Posts: 14,362
Likes: 1
From: Staples Center
w211 & w124
Hmm...sounds like it's a common issue. Hopefully one of our ambitious and courageous members will do some investigation and post a write-up on this.
Matt - I will look into getting an aftermarket alarm installed with keyless entry. Maybe it makes more sense.
Matt - I will look into getting an aftermarket alarm installed with keyless entry. Maybe it makes more sense.
Junior Member
Joined: Jul 2005
Posts: 60
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Although this topic is old, let me see if I can shed some light on it.
The system in these cars is based on a vacuumm pump that is located under the carpet under the passenger rear seat. From there, there are yellow tubes that go to all 5 doors (wagon). the front doors and the rear door have actuators and when you lock/unlock the door with the key, the lockin mechanism presses/pulls the actuator arm which gives a signal to the vacuumm. Once initiated the system will lock/unlock all the doors.
Although these systems are a paint and parts are expensive, they generally work for hundreds of thousands of miles. There are two problems that arise:
a. the soleniods/actuators go bad and no longer give the signal to lock/unlock
b. the tubing leaks
sometimes... although i havent had this problem on any of my cars, the pump will go.... i have an extra one in my garage.. but its going to end up on ebay. You can hear the pump whirl when you are in the car. Turn the car off, lift up the rear seat (exposing the floor), the lock the car (sitting inside).
hope this helps
The system in these cars is based on a vacuumm pump that is located under the carpet under the passenger rear seat. From there, there are yellow tubes that go to all 5 doors (wagon). the front doors and the rear door have actuators and when you lock/unlock the door with the key, the lockin mechanism presses/pulls the actuator arm which gives a signal to the vacuumm. Once initiated the system will lock/unlock all the doors.
Although these systems are a paint and parts are expensive, they generally work for hundreds of thousands of miles. There are two problems that arise:
a. the soleniods/actuators go bad and no longer give the signal to lock/unlock
b. the tubing leaks
sometimes... although i havent had this problem on any of my cars, the pump will go.... i have an extra one in my garage.. but its going to end up on ebay. You can hear the pump whirl when you are in the car. Turn the car off, lift up the rear seat (exposing the floor), the lock the car (sitting inside).
hope this helps
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From: Palm Springs, CA, USA
1991 300e 2.6
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From: Houston, Texas
Dora the Explorer
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1994 White an Grey E320 "Shado"
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From: Portland Area
2000 C230K and 2002 ML320
I think that only cars with the chrome strip on the door handles are equipped with that convenience feature. I could be wrong.
If you are having issues... change your fuses... thats my new campaign... my car was buggy as hell until I did that. Including my locks, windows and alarm.
If you are having issues... change your fuses... thats my new campaign... my car was buggy as hell until I did that. Including my locks, windows and alarm.
MBWorld Fanatic!
Joined: Apr 2006
Posts: 3,062
Likes: 0
From: Houston, Texas
Dora the Explorer
I think that only cars with the chrome strip on the door handles are equipped with that convenience feature. I could be wrong.
If you are having issues... change your fuses... thats my new campaign... my car was buggy as hell until I did that. Including my locks, windows and alarm.
If you are having issues... change your fuses... thats my new campaign... my car was buggy as hell until I did that. Including my locks, windows and alarm.
