Tire Pressure Monitoring System problems of the 2009 Ford Focus

I recently had four (4) new tires installed on my 2009 Ford Focus. In the process, one or more tire pressure sensors were damaged. The tire store has 'welded' the broken item back into place, a temporary fix at best. The tire pressure sensors are apparently fragile and vulnerable to the types of stress put on the auto wheels during tire changes. I assume that the "fix" may fail at any time, and also that during future tire replacements, other sensors will be damaged. Ford needs to fix this problem. I know two other Ford Focus owners, both of whom have suffered similar problems during tire changes.

The contact owns a 2009 Ford Focus. The contact stated that the ignition was turned on that the tire pressure system monitor warning light indicator did not illuminate when tire failure occurred. Due to the failure of the warning indicator the tires completely deflated and nearly shredded. The failure occurred whenever the vehicle was in operation. The vehicle was taken to the dealer approximately three times for the identical failure. The technician stated that the tire pressure system monitor operated properly and that the warning light illuminated when the tire pressure measured 15 psi, although the accurate pressure should measure between 26 to 27 psi. The contact was waiting on a response from the manufacturer regarding the failures. The failure mileage was 24,274. The current was mileage was 33,512.