Hi everyone
I have been through this too, first advice is DO NOT PAY TO HAVE THIS SORTED!!!
This is a result of faulty goods and your rights under UK legislation mean that you can get it fixed for free.
My Peugeot 407 (56 plate) has always had tyre sensor problems (false warnings) but just as it reached about 4 years old 3 of the valves were so badly eroded they couldn't be used to inflate the tyres. Luckily the only puncture I had was on the good valve, but I asked the tyre place about the others and they told me it's a common fault in this model.
Took it to the Peugeot dealer, who told me it's common, down to poor quality/design, Peugeot know about it and have done nothing to recall and replace. He suggested I replace it with ordinary valves at over £100 rather than replacing with the same valves at £500+ for all 4.
Luckily I know my rights and wrote to Peugeot UK customer relations (Customer Relations, Peugeot Motor Company PLC, 2 Sunbeam Way, Coventry CV3 1ND) explaining the situation, the opinions of motor trade professionals and tyre experts, and requiring them to replace these faulty items. I didn't say so in the first letter, but I was willing to take them to small claims court to get it recovered as I feel, knowing the legislation (Sale of Goods Act 1979) I am certain I would win and it would cost them a lot more to contest.
Their reaction was predictable… that I had a 3 year warranty and that they could not comment on the opinions of the dealer or tyre specialist or things I had found on the internet… BUT at the end “as a goodwill gesture” they would pay for all 4 tyre valves to be replaced. Which has now been done…
By the way, “as a goodwill gesture” really means IMHO – we are aware of the situation, we know we goofed up in the design/manufacture of these tyre valves (as evidenced by the fact we no long