New Key FOB won't open trunk

[Concat]

Hi all,

I was sick of the range on my key fobs and replacing the batteries did nothing. I was mentioning to my mechanic that I was going to extend the antenna, and he said not to bother. Just get a new fob on ebay.

So I did that, and followed the process for pairing it to the car by inserting my old key into the ignition, and the new key into the car door.

It worked like a charm, and I got my range back... BUT the trunk button doesn't work. It lights up on the fob, but doesn't open the trunk. Is there a separate process for getting that to work? I do have access to VCDS. To clarify, the key opens the trunk fine, and the button on the driver side door also opens the trunk. It's just the FOB that gets no response.

 

[94cobra2615]

Are you holding the button down for 4 seconds?

 

[AnotherPerson]

I also find the new style remote for my car you have to hold the button longer than the one old.

Wish I would have gotten more than 15ft of range when I got my new one.


Sent from my iPhone using Tapatalk

 

[Figit090]

What's the normal range? I also noticed on my car the range is somewhat small. Not a huge bummer but I was curious if the batteries were just low?
Where's the receiver antenna?

 

[jpdeuce]

Where's the receiver antenna?

It's on the driver's side under the panel under the steering wheel. I saw a post once about extending that antenna. If I come across it I'll edit this post.

EDIT > Pretty good little walk through:
http://www.billswebspace.com/ExtendingMKIVKeyFobAntennaRange.htm

 

[AnotherPerson]

It's on the driver's side under the panel under the steering wheel. I saw a post once about extending that antenna. If I come across it I'll edit this post.

EDIT > Pretty good little walk through:
http://www.billswebspace.com/ExtendingMKIVKeyFobAntennaRange.htm

Thanks for this link!


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[dirtride]

Yes, this is nice!

Anyone try it yet?

 

[gavski]

Good mod! Just did this since my dash was half apart already. Super range. Ran out of driveway and it still worked the locks from the house. Sweet.

On my '02, the plugs were a different color. Looking up, it was the one on the left and black, but contained the same clear wire.

 

[Figit090]

awesome! I'd probably experiment with different lengths so it's not such a huge range (avoid unlocking car from inside Target or somewhere stupid...) but I'm excited.

So does anyone know how long the stock one is? I feel like the location may be part of the issue.. not that I want to reroute it because it's probably difficult to remove from the harness but I'm curious if that's possible.

Good project for a rainy day, though!

 

[Concat]

Hi all,

Yes I have tried holding down the button for more than 4 seconds, and the previous key fob opened it without issue.

 

[IslandMK5]

Old thread...I know!
Just having same problem.
Ebay FOB, programmed-works great, except no trunk function. Remote lights up, car lights don't.

 

[U4ick]

Old thread...I know!
Just having same problem.
Ebay FOB, programmed-works great, except no trunk function. Remote lights up, car lights don't.

I,m having this issue with two new Ebay fobs, tried diy method and vcds, can't get the trunk to pop.

Haven't been able to find answer searching......does anybody know anything I can try?

 

[Nero Morg]

Do the doors lock/unlock? Could be because it's a cheap chip.

 

[U4ick]

Do the doors lock/unlock? Could be because it's a cheap chip.

Everything else works except the trunk, on a twenty yr. old car I should just roll on and open the trunk with the key or drivers door switch but noooooo...

 

[ToxicDoc]

You could try a fob from another vendor.