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Got a new key fob from merc. Thinking old one was not working. New one will not lock doors. no nothing only valet key will lock and unlock. Ignit part of fob on both new and old key work. suggestions?

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  • Master
  • 495 Answers

New keyfobs must be programmed to the car. they will not work out of the box

Posted on Apr 29, 2015

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Posted on Jan 02, 2017

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SOURCE: clio

the key has lost its code. open the doors manually and use the central locking button inside the car. hold it down and keep pressing your key fob. this should re code the key

Posted on Jul 12, 2008

tbirdfan1
  • 3051 Answers

SOURCE: key fob will not lock or unlock doors on 06 Sonata

Hi there
i have the same problem but mine is the sensor that is under the dash that is faulty so i had them disable it untill i can get a part that they need to order so i would have your dealer check the sensor .. if it is under warranty they will replace it for free

Posted on Mar 08, 2009

Murphybanton
  • 2004 Answers

SOURCE: key fob for hyundai elantra not working

Please dont worry yourself so much the security locks needs to be reprogrammed to enable it work effectively. Same happens to other vehicles as well.

Consult Hyundai garage close to you or if you have it in your manual.

Good luck.

rate this.

Posted on Apr 14, 2009

  • 412 Answers

SOURCE: 2005 Chrysler Grand Voyager. Central locking

the body control module may need a software update..check with your local dealer

Posted on Jun 12, 2009

  • 4793 Answers

SOURCE: my Porsche Cayenne S Key fob no longer unlocks the Door

unlock the door then press the lock button on remote and hold down for 20/30 secs.manual does say hold button.....

Posted on Mar 02, 2010

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2 Answers

Cant get the key to turn in the door lock


You may be trying with a valet key.
Valet keys usually can unlock the driver's side door and start the car, but can't unlock the trunk or the glove box. This key is normally used when someone else operates your vehicle, such as a valet parking attendant.

Aug 28, 2016 | 2008 Audi TT Coupe

1 Answer

Where is the valet switch for a 2004 dodge ram 1500


valet switch?????????????????

When the anti theft system was created,the dealers forgot to tell the new car buyers about how much the fob matters to the vehicle,without it,owners are stuck,your anti theft device is activated,you need to lock and unlock your doors a couple times with the key fob,not the key,and then you need to put the key in the ignition and start it,if you dont have your key fob,call your car dealer to get a new one,they are programmed for each car only,you cannot bypass it.if you lost your fob or never had it,whatever,you need to have the exact fob that came with that car from the factory,the key and fob have a chip in them that only go to that certain car,if you do not have it,then you need to buy a new one from the dealer or ebay and then you need to contact your dealer about programming the fob to your car,you might not have to have it towed if they have the documents from the car,the only other way is to get a junk car,with the steering column,key,fob and all computer boxes and door locks and switch them,i just did that with a 98 dodge dakota,and it works.

Mar 29, 2015 | 2004 Dodge Ram 1500

1 Answer

Used my Valet key last night and now my Audi A4 wont start, is this related to using the valet key?


more than likely as the fob key has a chip that syncs with the security system etc , have you got the owners handbook as this should give you the procedure that needs to be carried out to reset the fob key,can't take the credit for this fix as found it at an audi forum give it a try .
I learned a new trick tonightbiggrin.gif. I recently changed the battery in my key and it would no longer open the door locks. I just sat down and read the manual and found that if you replace the battery you need to re-synch the key.

Here is how it's done.

replace the battery. ( pry open the little tab at the seam in the key, then split the bottom in two with your finger)

Press the lock or unlock button once.
with-in one minute put the key into the drivers door and lock and unlock it manualy.

TADA it works again biggrin.gifbiggrin.gifbiggrin.gif

I have seen a few threads and questions that said there fob stopped working. so I thought I would throw this out there. I hope that some of you with this problem that don't have manuals because the previous owner kept it for a souvenir will find this Helpful.

May 20, 2014 | 2009 Audi A4

1 Answer

Jeep liberty 2006 power lock will lock but not unlock


there are 3 ways to lock.
key metal
on door switches
and the FOB, RKE.

so is this a fob question? key fob? only failure???????
did you know that many fob modes are PROgrammable?
the operators guide tells you how to do that.
did you try both fobs, that came with car new., if not why not?
did you replace the 8 year old fob batteries, no , why not now.?

on my 08 (for example) :
can program it to only open drivers door. or all.
and autolock feature off or on.

on my other car all was worked fine. then drives door failed
to open (all 3 fobs fail, one is new) the door solenoid was bad.
$100 part. now fixed, by me.
so do all fobs fail. if in fact this is a FOB question
RKE (called remote key entry by jeep)

i have 4 fobs for my jeep now. you must have 2 good keys.
to make a 3rd by self.
so keep 2 , never ever used. to be self sufficient.
this is not a door issue, above 3 lines, its a not getting stranded issue.


Mar 31, 2014 | 2006 Jeep Liberty

1 Answer

How do i disable valet mode om a 98 jaguar vanden plas?


Try inserting the key into the drivers door lock and try centrally locking and unlocking all the doors a few times. If this does not reset the valet function try using the key in the drivers door lock and pressing the fob at the same time as locking and unlocking the doors. Even with valet mode engaged you should be able to access the trunk by physically inserting the key into the trunk lock.

Oct 06, 2010 | 2006 Jaguar XJ8

1 Answer

Hello there top of the morning to you! First of all I just bought a 2000 Audi TT 1.8T yesterday and didn't realize a few things till i brought her home from the dealer. The key fob needed new batteries so...


once you fitted new batteries to both fobs you needed to reset the car.....put key in drivers door and unlock/hold key over(windows go down)wait 30 secs then lock/hold over key,(windows go up)wait 30 secs,then press/hold unlock button for 30 secs.you have just reset the system.you have loads of other little gizmos but i will leave you to find them all good hunting....one side parking lights/driveway illumination/and more.
geoff

Sep 10, 2010 | Audi TT Cars & Trucks

3 Answers

My Porsche Key fob no longer unlocks the doors


Insert key into door barrel or ignition lock and turn key, whilst doing this press the unlock/lock button, the led on the dash should flash to indicate this has initialised the key to the car, then remove key and test operation of remote. If this fails then a new remote plus coding to the car by your dealership is needed

Feb 16, 2010 | 2005 Porsche 911

1 Answer

How to program a keyless entry fob for 2005 gmc envoy - i am replacing the battery in my key fob every 5 days. I have to be right next to the car for it to work. Any idea what would cause this. I ordered a...


Seating in the drivers seat , make sure all doors are closed.Insert key into ignition, don't turn on yet.
Wait for the dome light to go out, then press and hold the door unlock button , make sure it is UNLOCK, while turning the key ON OFF ON OFF Twice , do not engage the started, just on to the point of being on. Release the unlock button,and your doors should lock, then unlock indicating programming mode.At this point hold down both the lock and unlock button on the key fob. After 30 seconds your locks should lock and unlock, indicating the fob is programmed. This must be repeated for all remotes, whether or not it be new or old. After all remotes are programmed, turn the key off and on again to exit programming mode.

May 18, 2009 | 2005 GMC Envoy

2 Answers

Lincoln Continental2000-Door key won't unlock door-but starts car


I locked the 2000 lincoln continental with the key fob but lost it now the ignition key wilolo not unlock the door

Jan 01, 2009 | 1999 Lincoln Continental

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