j200george
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Apparently The tpms sensors battery dies after a number of years, who knew? Well I didn’t mainly because I’ve never had a 7 year old car before I guess.
A trip to parts at Merc tells me they are £65 a corner. (Not sure if that was a vat inclusive price).
My local trusty tyre place suggests I need three and they supply and fit for £85 a corner. No doubt the fourth will fail shortly.
Any thoughts or advice? Online there are lots of cheap varieties, anyone done this themselves? Getting the tyre off the rim and making sure the new valve is sealed correctly would be the challenge I guess.
I’m going to take the car to another fitter to compare costs and whether they diagnose the same three sensors as faulty today before shelling out £255.








