Tire Pressure Monitoring System Problems of Ford Expedition

See attached document for complaint.

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The contact owns a 2004 Ford Expedition. The contact stated that the turn signals, the hazard lights, and the cigarette lighter had become inoperable. The tpms warning light was illuminated. The dealer and the manufacturer were not notified of the failure. The vehicle was not diagnosed or repaired. The failure mileage was unknown.

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The contact owns a 2022 Ford Expedition equipped with hankook, tire line: dynapro, tire size: 275/55/r20, dot number: (n/a). The contact stated that while the vehicle was parked, the contact became aware that the tire pressure was low. Additionally, the check engine warning light was illuminated. The contact drove to discount tire to inflate the tire. The contact stated that there was an abnormal sound coming from the brake pedal. The vehicle was taken to a dealer where it was diagnosed and determined that the battery needed to be replaced, and the brake pedal needed to be cleaned. The battery was replaced, and the brake pedal was cleaned. The vehicle was driven back to the dealer where it was diagnosed, and the failure was linked to the brake pads and rotors. The manufacturer was notified of the failure but offered no assistance. The contact was referred to the NHTSA hotline for assistance. The approximate failure mileage was 8,065.

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While inflating tires during a service the customer's valve stem broke.

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Clamp holding the pressure sensor broke in pieces ranging from 3 to 8 inches. This metal along with the pressure sensor rattled around loose in the tire causing excessive vibration at speeds over 40 mph. This happened on both front tires. Car had approx 49,000 miles when problem was found. Pieces were removed (which I still have) and new tires installed with out pressure sensor. I get error message on control panel every time I start the car.

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Low driver side tire indicator sounded a few hours prior to accident where vehicle flipped over 4 times 70-80 feet end over end bounced off a telephone pole then landed in the opposite lane back wards. The low tire indicator had gone off twice to which the tire was taken to the station to be refilled up to air pressure as recommended by the service manual. Driving speed was close to 50 mph on a slightly rural road with not many turns mostly straightaways. Just coming out of a small right turn the tire must have lost air jerked the steering causing the vehicle to roll over end over end cartwheeling and landing in 4 spots according to tire marks on the road itself each double lined mark was on the center line of the road about 70-80 feet apart before hitting the pole and bouncing the vehicle into the opposite lane facing the other direction. Where upon aide of others it could not be restarted and the drivers side tire was completely unusable. The vehicle broke out 3 windows and the windshield is wasted, can be started but grinds when put in gear, can not be driven even after tire replacement.

There is a tpms fault due to cellular phone or cellular phone charger use. Ford motor company has issued a TSB to dealers that this is a known issue, but have not developed a remedy.

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Tire pressure light on. Dealer found cracks in tire stems on al four and replaced.

The contact owns a 2007 Ford Expedition. The contact stated that the vehicle's alarm sounded, which indicated that the tire pressure was low. He placed air in the tires, but the tire pressure did not increase. He took the vehicle to the dealer and they discovered that the tire valve stems (tr414) were also defective. The valve stems were replaced. The manufacturer stated that they would reimburse the contact for the replacement costs. The current and failure mileages were 183,000.

04 Expedition. Tire pressure monitoring system not working properly, when tire pressure is set to 35 psi per factory setting on door, tpms goes off. According to the dealer the tire pressure is correct and the tires are fine. Tpms still not working properly.

04 Expedition. Tire pressure monitoring system not working properly, when tire pressure is set to 35psi per factory setting on door, tmps goes off. According to the dealer the spec on the tmps is 3-5psi below set tire pressure which should be 35psi factory setting. The dealer spoke to the Ford tech they said to increase the tire pres to 39 psi, the dealer set the pres to 40psi. The tmps has not gone off, but my concern is it working . The sensor is actually set 5psi higher than the recommended pressure, and if the sensor is working now. Is the sensor in a condition that does not allow it to work. In my profession, medical ventilation repair, if a pres sensor is pushed to its limit it has a tendency to stay in this position (stuck). If the tire does have a problem will it go off, the tmps has gone off continually since it was new. It has been in the dealers service at least 3 documented times and numerous times they just checked the tire press and adjust the press. Ford sheet number 17030, of Ford suggested fixes. Tire pressure changes approximately 1 psi per 10deg of temp change. To clear tmps warning, set tire psi to spec with a digital gauge note to reduce false tmps warnings or ride harshness during tire service or pdi, the dealer set tire pressure to 35psi with a digital meter and we still get the light/message. If the tire pressure changes 1 degree for every 10 degree temerature change, set at 40psi in presscot where I live and driving to phoenix could make the press in the tire greater than the max tire pressure on the tire. The max on the tire is 44psi. This is also the case in presscot winter vs. Summer. I don't believe that adding tire press is a correct fix. The tmps to what I have read doesn't alarm you to overpress, which could cause lack of traction in an emergency swerve. You would not have the same traction as the tire set at a lower press. Ford should be required to make the tmps work as intended with the correct press stated on the driver door.