Audi TT Mileage Issue

**AyceeDeeCee** · 22nd February, 2010, 10:09 AM

Had a customer in that has used VAGTacho and locked his dashboard out to 999999 due to it doesnt' checksum properly.

How can I correct this?

Does the processor need to be removed in full for this or any other ideas?

Appreciate any help here.

**drpeter** · 22nd February, 2010, 12:02 PM

Originally Posted by AyceeDeeCee

Had a customer in that has used VAGTacho and locked his dashboard out to 999999 due to it doesnt' checksum properly.

How can I correct this?

Does the processor need to be removed in full for this or any other ideas?

Appreciate any help here.

Let me guess a M73 cluster, try to disconnect battery for 1 hour, connect again. If it's still 9999999 then you need a good cluster dump for your car. crc error indeed.

**elpaulio** · 22nd February, 2010, 09:46 PM

Does anyone know which version of VAG Tacho will work on a 2005 B7 Audi A4?

Cheers

Paul

**drpeter** · 23rd February, 2010, 07:29 AM

Originally Posted by elpaulio

Does anyone know which version of VAG Tacho will work on a 2005 B7 Audi A4?

Cheers

Paul

No vagtacho, use magic Dash CAN, but personally I prefer to take this cluster out, backup dump and edit. Expensive cluster :-).

RB8 crypto eprom (24C08)

**lupu_sandu** · 7th March, 2010, 04:57 PM

Magic Dash CAN, can read eeprom from RB4-RB8 dash.
So, make back-up tru OBD2

**exe123** · 7th March, 2010, 09:43 PM

Best tool for RB4 and RB8 is Dialab Dejavue. No need to take out the dash

**lupu_sandu** · 7th March, 2010, 09:55 PM

Very expensive. Only for Audi.

**AyceeDeeCee** · 9th March, 2010, 05:35 PM

Thanks for your help guys will try this. Sorry I missed the thread!

**aeroyas** · 9th March, 2010, 05:52 PM

remove your dash and read the dump on processor, then you can send it here to be repared or find another dump

**v-diag** · 9th March, 2010, 06:15 PM

send me dump? should be able to repair it for you.

**AyceeDeeCee** · 9th March, 2010, 06:41 PM

Great thanks will get it out tonight.

**elpaulio** · 4th May, 2010, 02:06 PM

Originally Posted by drpeter

No vagtacho, use magic Dash CAN, but personally I prefer to take this cluster out, backup dump and edit. Expensive cluster :-).

RB8 crypto eprom (24C08)

Hi,

How do I go about making a backup dump of the cluster once it is out?
What would I need to do this?

Sorry for the n00b questions!!

Paul