How many miles do you have on your Volvo? Don’t know? Have no way of knowing? Maybe it’s time to fix the odometer! We’ve got a detailed how-to guide on fixing your Volvo 850’s broken odometer. Check out the run-down below to see how to replace your odometer’s gear wheel (if a tooth is broken, for instance) to get it back up and running.
If you have a Volvo with an OBD system under the hood (generally up to 1995 and some ’96 models), you can read the actual miles from the ECU so that you can set your odometer to the correct number after it’s fixed.
Let’s get to it!
Odometer Fix Procedure
Follow the detailed steps below to fix your 850’s odometer! IMPORTANT NOTE: MVS user Steven reports this impacts both the trip meter and odometer.
Remove vents to access inner fastenings.
Remove screws around the dash.
Remove the instrument cluster by loosening the dash above the cluster, unplugging wires, and opening the latches holding the cluster in. There are many detailed photos, so take your time to go through them!
Remove the back of the instrument cluster.
Here’s an additional image from MVS contributer Govil showing the 10 screws you need to remove:
Remove the faceplate. IMPORTANT TIP NOT SHOWN: There is a brass nut and washer on the back of the cluster that must be removed before you can gain access to the odometer and trip gears. Do not tighten too much after the repair as you can crack the circuit board.
Remove the odometer’s gear unit (in blue in the photo below).
Unscrew the wheel section from the removed unit.
Remove the broken wheel from the wheel section. This broken wheel is what we are replacing!
Here’s an additional image from MVS contributor Govil showing greater detail of the gears:
Another image from Govil showing broken tooth:
Install the new wheel in the wheel section and re-install the wheel section onto the larger, blue gear unit.
Before moving forward, MVS user Govil recommends checking that the gear is documenting mileage properly:
Nice! We’ve completed our quest. Now it’s time to just put everything everything back. First, reinstall the blue gear unit into the instrument cluster.
Remember to line up the cluster with the holes, per Govil recommendations:
Test the unit to ensure everything is working properly.
The rest is easy! Pop the face of the instrument cluster back on, replace the screws on the back (don’t forget that brass screw!), and reinstall the instrument cluster into the dash.
Image Credit: CC via Flickr