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magicpants

2009 Smart Fortwo 451 door locking issue

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Posted (edited) · Report post

Thanks in advance for any help! My 2009 Smart Fortwo 451 isn't locking properly with the key fob. I've gone through every similar thread but couldn't find one that resolved my problem.

I have 2 key fobs and they both function identically. The key fobs will not lock either of the doors and the lights flash 3 times. The fobs will remotely unlock the driver door, but not the passenger door (i can hear a click in the passenger door when unlocking, but it doesn't sound like the unlock-then-lock issue others have had).

The interior lock/unlock buttons on the dash work properly for both doors. I have replaced the batteries in both key fobs, fixing none of these issues.

Any other tests I can try? Or any more info I can provide? Or anybody have any thoughts what could be causing this?

Thank you!

Edited by magicpants

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Welcome to CsC.

 

When unlocking the doors the first push of the button unlocks the driver's door.  To unlock the passenger door the fob must be pressed a second time. 

 

When locking I have never experienced the 3 flashes if the doors did not in fact lock. 

 

Did you physically confirm the doors were still unlocked after getting the 3 cycles of flashing lights?

 

I would recommend reading the owner's manual for your car.

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Thanks for the welcome.

 

Yes, obviously I physically confirmed the doors aren’t locked. And yes if i press the unlock button 100 times, the passenger door is still locked.

 

This problem has been going on for at least 6 months. I’m just now getting a chance to resolve it.

 

There is a fault in my system. The owners manual isn’t going to be useful, but I hoped someone here had experienced a similar issue and could advise. 

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49 minutes ago, magicpants said:

 

Yes, obviously I physically confirmed the doors aren’t locked. And yes if i press the unlock button 100 times, the passenger door is still locked.

 

 

This was not stated in your first post, so it was not obvious in any way.

 

I have read most of the threads on this site.  I am nearly 100% certain you are the first with this issue to report it here.  I do not frequent smart Car of America anymore, there may be someone over there that has experienced a similar issue.  There are more 451 owners to be found there.

 

A STAR machine connected to the car may be able to diagnose the issue, you would be either looking at taking the car to M-B or a shop that deals with European cars.  I do not know if faulty fobs or a faulty fob receiver could cause your issues.

 

Hopefully you will be able to get this fixed and will report back.

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