Mk 5 Golf Central Locking Problem

[Holmey]

Hi,

My daughter has bought a 2004 Mk 5 1.4 Golf and is having problems with the central locking, with using the key only opening and clocking the driver’s door, and using the key fob, nothing, even though it has a new battery and the light lights when you press the buttons. The lock button on the drivers door only locks the driver’s door too.

I’ve read a lot of threads online about this, it seeming a common problem with Mk 5 Golfs, but got nowhere, having tried pairing the key fob with the car, (that seems to be at least 1 problem with it), by 2 methods I’ve read online, putting the key in the ignition, turning the ignition on then pressing lock 10 times, then unlock 10 times while the key is still in and ignition on and turning the ignition on for less than 3 seconds, removing the key, pressing and holding down the lock button while pressing the unlock button 3 times, but neither of these methods work.

Has anybody got any idea what can be causing this? Any more suggestions about pairing the keys?

Many thanks

Holmey

[willdudeuk]

You need to replace the lock actuators / mechanism.

Have you had a scan done of the vehicle?

is it 3 or 5 door?

Its a common issue on these cars for this part to fail.

Replacement parts from VAG are the most reliable option but are expensive!

[FLAPPERJACK76]

Yep, sounds like the lock unit, about £150 each plus vat from the dealer or £25 for Chinese ebay one, you have to take the door outer skin off to replace it.

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[Holmey]

You need to replace the lock actuators / mechanism.

Have you had a scan done of the vehicle?

is it 3 or 5 door?

Its a common issue on these cars for this part to fail.

It's a 5 door.

What/where are the lock activators and is it a big job replacing them?

What sort of scan are you talking about, having the car scanned for a key code? Where would I get this done?

Thanks for your quick reply

Holmey

[Holmey]

Yep, sounds like the lock unit, about £150 each plus vat from the dealer or £25 for Chinese ebay one, you have to take the door outer skin off to replace it.

Sent from my SM-G970F using Tapatalk

So all the lock activators that don't work, (front passenger door, both rear doors and the hatch), need replacing?

Holmey

[FLAPPERJACK76]

Driver's door more of master and the others a slave, needs to be observed in live data what's going on

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[Holmey]

needs to be observed in live data what's going on

Sent from my SM-G970F using Tapatalk

How would I go about that, does it need a specialist?

Holmey

[willdudeuk]

You need someone with VAG COM / VCDS or dealer system ODIS.

They can do a scan for you and also look at live data.

You need to properly diagnose the car before replacing parts otherwise it’s futile (and you’ll end up wasting your money).

[Crasher]

Replacing Golf 5 door lock units means removing the door skin so a lot of care is required. Cheap Chinese and used units are often a disaster. Start by having the convenience system code read, hard copy print out of the codes, code clear, test the system and re read of the codes with another hard copy so the two can be compared. From this you will be able to get an idea of what is wrong but it is a complex system operated by CAN and LIN BUS digital signals to and from the door controllers (winder motors) and the locks to the convenience unit behind the glovebox.

[Holmey]

Thanks for all the replies, with it seeming from my research so far that it's the front drivers door central locking activator that's packed up, so much for it only being a fuse as she was told when she bought the car

Am I right in my thinking that the drivers door activator acts as a master, that that's the only one that "talks" to the remote fob and then that triggers the other ones?

We are going to have it scanned this morning, as has been said above, until I've had that done, nothing can be certain, but if it is as I suspect and the drivers door activator has packed up, has anybody got the genuine VW part number for it?

Regards,

Holmey