I took my car in for new tires and a new battery. When I got it back, I discovered that neither the odometer nor speedometer were working. I raised this with the shop and they claim that nothing that they did could possibly have impacted the speedometer function.

I find it rather too coincidental that everything worked just fine right before I dropped it off and failed to work at all since I picked it up. Can anyone give me any advice on this? I'm going back to talk to a manager to try to get a result.

Fr_Chuck

Merely changing a tire or a battery can not cause the speedometer to stop working.

There will be a cable that runs down from the speedometer that controls these funtions. ( now of course they could have broken the cable or disconnected it, but I can not see any way it could have been an accident and would have had to be done almost on purpose)

I would take it to a second service center and let them look at why it is not working. If it is disconnected, you know someone did it, if the cable merley broke, then it just happened..

I had my truck at a service station to be fixed once, and as the mechanic was taking it in for one problem, the brake line broke, we knew it did, since the mechanic ran right into the back of his shop and could not stop.

educatedhorse_2005

They have to be unhooked from the back of the transmission.
If it is a front wheel drive car it is possible to unhook if you had a break job down