406 TDI Speedo Reading (R Reg 2.1)

I know the following is going to sound really dodgy but here goes:

I have just had to change my instrument cluster as the speedo had
packed up. Managed to find a second hand one over the net and have
fitted it all working much better than the old unit and £600 cheaper
than a main dealer!!

However, the replacement speedo is reading 208,000 miles and my old
unit only had 114,000.

Does anyone know how I can get this corrected easily. I assumed the
mileage was stored in the ECU and not the instrumnet cluster.

Many thanks

 

it can be reprogrammed by odbII codes, look for speedo meter
correction on google and you'll find plenty of options

 

Resolder all pins of the 2 connectors in the back of your old unit and
any other dry joints you may find and put it back in.