Doors Don't Unlock - Intermittently
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From: Texas
2005 C240
Doors Don't Unlock - Intermittently
About once a week my C240's other 3 doors won't auto-unlock when I open the driver's door. I've taken this in twice and the "controller" was replaced both times -- with no change.
I've done searches and seen other people reporting this same problem but no one ever posted a solution. Has anyone had this problem and gotten it fixed? What was the answer?
I've done searches and seen other people reporting this same problem but no one ever posted a solution. Has anyone had this problem and gotten it fixed? What was the answer?
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Joined: Nov 2001
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From: Huntington Beach, Ca.
'17 Jaguar XF
It depends....
...on how you unlock the car with the remote. If you click once and unlock just the driver's door then when you leave the car only the driver's door will unlock. Click twice to unlock all doors and all doors will unlock when you leave. A very subtle safety feature that you would appreciate if you felt compromised by having all doors unlocked when you enter or leave your car.
Last edited by mleskovar; Oct 26, 2005 at 11:49 PM.
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From: Texas
2005 C240
Thanks for the response, but I mean that when I'm inside the car and open the driver's door to exit, the other 3 doors don't unlock. This, too, may have been a setting, but it's obviously not something I'm changing.
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From: Huntington Beach, Ca.
'17 Jaguar XF
Originally Posted by postoak
Thanks for the response, but I mean that when I'm inside the car and open the driver's door to exit, the other 3 doors don't unlock. This, too, may have been a setting, but it's obviously not something I'm changing.
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From: Huntington Beach, Ca.
'17 Jaguar XF
Global vs. selective modes.....
Don't know how that affects it....try it and see. You have to use remote to unlock car, drive until auto lock feature engages (9mph), turn off/remove key, open driver's door and see. Try it with one and two clicks entering and see if there's a difference and let us know. Kind of defeats the purpose of the global feature if it works that way.
Last edited by mleskovar; Oct 28, 2005 at 01:39 PM.
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From: Texas
2005 C240
I tried 1 and 2 clicks and the locks worked afterward. Still, this is the best lead yet and I'll pay close attention to what buttons I've pressed before entering the car. I admit to fingering the remote in my pocket and sometimes incorrectly pressing lock or trunk unlock before hitting the unlock button.
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Thread Starter
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Joined: Aug 2003
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From: Texas
2005 C240
Happened again today, even though I *know* I pushed the correct buttons on the remote in unlocking the car from the outside. (Just to make it clear, though, the problem happens later, when I'm exiting the car by opening the driver's door.)
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MBWorld Fanatic!
Joined: Nov 2001
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From: Huntington Beach, Ca.
'17 Jaguar XF
Originally Posted by postoak
Happened again today, even though I *know* I pushed the correct buttons on the remote in unlocking the car from the outside. (Just to make it clear, though, the problem happens later, when I'm exiting the car by opening the driver's door.)
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From: Texas
2005 C240
By "buttons", instead of "button", I meant I've been very careful to only push the "unlock" to enter the car and "lock" when leaving it. Before, I would work the control in my pocket and sometimes hit an incorrect button before finding the correct one. I've read the manual a number of times, but since I've had the car in twice for this, I would think the service guy would have pointed it out to me if I was just doing something wrong.
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From: Texas
2005 C240
Well, I haven't had this happen in a month. Long story short, as to what I did to prevent it happening is to swap keys every day. Perhaps someone here can explain why that would work. 
When I first switch to a new key, I go 15 days before it happens again -- then it begins to happen more and more frequently. Swap to the other key and the cycle repeats. Some setting is being lost -- either in the keys or, more probably, wherever settings are stored in the car itself. Why changing keys prevents this from happening, I'd be interested to learn.
The dealer hasn't a clue.
When I first switch to a new key, I go 15 days before it happens again -- then it begins to happen more and more frequently. Swap to the other key and the cycle repeats. Some setting is being lost -- either in the keys or, more probably, wherever settings are stored in the car itself. Why changing keys prevents this from happening, I'd be interested to learn.
The dealer hasn't a clue.
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From: Lawrence, KS (USA)
S500/W220/2000
This may just complicate things, but the e-keys on my S-class can be programmed (by pushing and holding the lock and unlock buttons) to unlock all doors or just the drivers door. The doors will operate the same way on exiting. These keys come w/ two or three settings for locking ans unlocking the doors. Your dealer should be able to explain exactly how yours operate.
Have you checked the batteries in the keys?
Have you checked the batteries in the keys?
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From: Texas
2005 C240
Thanks, I'm aware that setting is changed via the key. Reading that in the manual is what turned my attention to the keys as the possible source of problems.
Both keys have had this problem since day one, so I doubt it's the batteries, but I'll bring this to the dealer's attention the next time I'm in for service.
Both keys have had this problem since day one, so I doubt it's the batteries, but I'll bring this to the dealer's attention the next time I'm in for service.
