VW T6 - No Key. Hold key up to marking. Manual!

[tommycj]

I’m having an issue with my VW T6 2018 where the key won’t start the car.

The remote has a brand new battery, and will lock and unlock the car using the remote.

When I try to start the engine, it starts for a second and then goes off. It then sometimes won’t even turn over.

It says on the dash ‘No key. Hold up key to marking. Manual.

After 5 - 10 minutes of trying, it decides to work.

I have four keys, all with new batteries, and they won’t start.

I’ve tried changing batteries, resetting by unlocking it manually.

Any help would be greatly appreciated!

 

[Badjamin]

Thread 'T6 'KEY NOT DETECTED' MESSAGE scorpion S5+' T6 'KEY NOT DETECTED' MESSAGE scorpion S5+

 

[tommycj]

Thread 'T6 'KEY NOT DETECTED' MESSAGE scorpion S5+' T6 'KEY NOT DETECTED' MESSAGE scorpion S5+

Thank you! This is the same issue but there was not an answer

 

[Badjamin]

Thank you! This is the same issue but there was not an answer

Sorry I thought there was info but was half asleep. Have you been through all the similar threads suggested below your post? Alot of people on here won't respond unless you do your research on the forum first.

And why in all of Narnia do you have four keys? I'm guessing you don't have all four on the same keyring hehe

Do a search on key issues and also key cloning. The keys reprogramme themselves in certain instances - look up carpark key cloning. Let us know how you get on.

 

[tommycj]

Appreciate the reply, I had already found the thread that you sent me!

I've had a look online and it says that I should check the batteries, and go through a reset process: unlock the car with the fob, use the manual lock, wait ten seconds - this didn't do anything.

I can't see anything else online. I may have to just take it to a dealer - but this will be very expensive!

I will look into these, thank you.

 

[Pauly]

The battery in the fob is only for remote lock/unlock
The fob functions and the immobiliser are totally separate and dont affect each other

The immobiliser works by reading a signal from the key and authorising it and allowing the van to start, the fact you have four keys and none works would point to an issue with the vehicle more than keys
There is a ring sensor/reader around the key barrel that reads the immo code from any key that is inserted and this is fed to the immobiliser (which lives in the cluster)

I think the first point to check would be a fault scan of the van to see what error codes are logged, this should hopefully give you some direction towards a component/wiring fault etc

FWIW if you dont authorise the immobiliser and try to start the van it will initially fire up for a second or two then immediately shutdown so what you are seeing is expected behaviour for the problem you have