Speedometer reads 10kms fast.

57gretsch · Post by **57gretsch** » 16 May 2016, 12:20

Could this be something in the ABS controller?
I had to change out the original but the replacement was not in the list of part numbers for a 2000 V70XC.
The tires are correct. So they are not the culprit.

I noticed the descrepency when passing through a few speed monitors on the highway.

Post by **scot850** » 16 May 2016, 12:53

Do you still have the original? You can get them re-built fairly cheaply. Contact Matty at Mid-West.

Neil.

Post by **misha** » 16 May 2016, 13:27

57gretsch wrote:...The tires are correct. So they are not the culprit.

What dimensions are they?
My car,for example,came from the factory with 205/50/16 on Persus wheels.
There were variations with 195/60/15...195/65/15 or 205/60/15,dependable of market.

Post by **Matty Moo** » 16 May 2016, 14:32

It isn't your abs module. More than likely it's the roadside radar deals that are off.

57gretsch · Post by **57gretsch** » 16 May 2016, 14:48

Didn't think so.
The tires are Spec according to the plate in the fuel access. Those are on Terra rims which are also Spec for the XC. I don't suppose deer whistles will defeat the radars

Post by **misha** » 16 May 2016, 14:52

Matty Moo wrote:It isn't your abs module. More than likely it's the roadside radar deals that are off.

I think in that way too.

Post by **scot850** » 16 May 2016, 15:20

Have someone follow you and check the speed in another car. If they are both out by 10kph then the radars are likely off!

Neil.

ktuuri · Post by **ktuuri** » 16 May 2016, 15:47

Borrow someones GPS and you will know for sure.

Post by **Matty Moo** » 16 May 2016, 20:07

I always speed up when I see those in an attempt to set some sort of imaginary high score as long as it isn't in a residential area.

Azik09 · Post by **Azik09** » 17 May 2016, 06:12

In any car speedometers have a positive measurement deviation in about 5-8 percent. In this way manufacturers prevents drivers from exceeding speed limit. Also, there is a correction value for tyres size stored in instrument panel. Surely, this value should match to real tyres size.