75ZT Community

9060davidj · Posted 18 May 2026, 23:39 #1

hi to all
had mot on my rover 75 diesel and the person told me that the mileage on the ipk was less than the mileage recorded last year now is the correct mileage recorded and stored on the ecu or the ipk and how can i view the mileage
david

Duncan · Posted Yesterday, 14:38 #2

The mileage is stored in a number of places. The two most important are the IPK (Instrument pack (IPK from the German)) itself, and the light switch (I know, sounds weird right?) If the IPK has been changed and disagrees with the light switch, then your trip computer would show Err instead of trip mileage. If it doesn then there are two possibilities: The IPK and light switch were both changed, or the MOT station made a mistake on the previous test.

I've experienced the latter.

9060davidj · Posted Yesterday, 17:18 #3

hello duncan
found out what was wrong i changed the ipk last year after the mot to the old ipk i had on the car thinking that mileage would automatically be updated i was wrong so i refitted the ipk i had on the car when i had a mot last year that is why i need to find someone to return the ipk to virgin state what does the chip that has to be changed look like do you have a photo of the chip
david

Duncan · Posted Yesterday, 17:57 #4

9060davidj wrote:hello duncan
found out what was wrong i changed the ipk last year after the mot to the old ipk i had on the car thinking that mileage would automatically be updated i was wrong so i refitted the ipk i had on the car when i had a mot last year that is why i need to find someone to return the ipk to virgin state what does the chip that has to be changed look like do you have a photo of the chip
david

I can get a photo of the chip, but give me a few days. It's an 8 pin SMD device. Needs a bit of dissasembly to see it in the IPK, but I have a few loose in a box.

75ZT Community

75ZT Community

mileage by 9060davidj