head unit security code probs

[TDIESEL]

I have recently bought a RCD500 head unit to replace my RCD300, mainly for 6 stacker function. Got everything hooked up no probs but when I put in the code that was supplied on the card it just comes up with SAFE and locks after 2 attempts.

I have followed the owners manual to the letter and made sure I pressed the enter button for at least 2 seconds after I input the code. Funny thing is the instant I press the enter button SAFE comes up on the display?!

The code provided is the last 4 numbers of the head unit serial number, is this the code normally used?

Anyone able to help or is it a visit to dealer fix?

[Bubu]

I have not tried changing head units on the VW. But what I can tell you is that on the Polo GTI I had the same thing come up.

I disconnected the battery when I reconnected the battery the head unit displayed "Safe", I dont have the pin code for it so I planned to get down to the dealer to get it when I had some time.

After 5 days I still had not been to VW to get it sorted, however the headunit just started working again. I did nothing to the headunit to get it going again and I drove the car everyday of those 5 days. It appears as though it relearns the code, but im not sure if it will do that when you change the headunit.

[Maverick]

If the head unit is replaced the code is only required the first time as it's saved into the car (can't remember the module - it's the convenience module or instrument cluster I think) so if the battery is disconnected or the headunit pulled out and put back in later the code is not required.

Not sure how it would take 5 days to re-enable but may be worth bringing up next time you get some warranty work performed.

[TDIESEL]

Problem fixed. The previous owner rang VW dealer and got the code...after arguing that the first one they gave him didn't work.