The contact owns a 2018 Ford Expedition. The contact stated that upon starting the vehicle, he heard a loud rattling sound coming from the engine compartment that dissipated once the vehicle reached an operational temperature. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to the Customer Satisfaction Program: 21N03 (Engine Cam Phaser Replacement) Engine and Engine Cooling. The manufacturer was notified of the failure but referred the contact to the NHTSA Hotline for assistance. The failure mileage was 48,000.

- Pearland, TX, USA

The contact owns a 2018 Ford Expedition. The contact stated while starting the vehicle, the vehicle made an abnormal rattling sound. The vehicle was taken to several independent mechanics, where it was diagnosed that the cam phasers had failed and needed to be replaced. The vehicle was not repaired. The dealer was contacted. The manufacturer was notified of the failure and informed the contact that the vehicle was previously repaired under Ford Campaign Number: 21N03. The contact stated that the repair failed to fix the vehicle. The failure mileage was approximately 120,000.

- Rowley, MA, USA

The contact owns a 2018 Ford Expedition. The contact stated while driving at an undisclosed speed, several unknown warning lights illuminated. The contact was concerned about a fluid leak coming from the engine. The vehicle was taken to a local dealer where it was diagnosed with an engine oil leak. The local dealer referred the contact to the NHTSA Hotline. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 124,000.

- Batesville, MS, USA

The contact owns a 2018 Ford Expedition. The contact stated that while starting the vehicle, the engine made loud rattling sounds. No warning light was illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure and a case was opened. The contact was advised to file a complaint with the NHTSA Hotline. The contact related the failure to Customer Satisfaction Program: 21N03 (Cam Phaser Replacement); however, the VIN was not included. The failure mileage was approximately 96,000.

- East Patchogue, NY, USA

The contact owns a 2018 Ford Expedition. The contact stated while driving at an undisclosed speed, the driver became aware that the coolant level was low. The contact stated that the engine was making an abnormal rattling sound. The front wheel was making an abnormal sound. There were no warning lights illuminated. The service engine error message was sent to the Ford pass. The vehicle was taken to the local dealer, where it was diagnosed that the water pump, cam phaser, hoses, solenoid, and timing chain needed to be replaced. The vehicle was not repaired. The vehicle was taken to an independent mechanic, who completed the repairs. The manufacturer was contacted and opened a case. The failure mileage was approximately 100,000. The VIN was not available.

- Marietta, GA, USA

The contact owns a 2018 Ford Expedition. The contact stated while starting the vehicle, and occasionally while driving at various speeds, there was a loud rattling sound coming from the front-end of the vehicle. The contact stated that the vehicle hesitated while responding. The contact stated there was coolant leaking from the vehicle and the check engine warning light was illuminated. Additionally, the wrench symbol was displayed on the instrument panel. The vehicle was taken to the dealer who diagnosed that the cam phaser and timing chain had failed, and that coolant was leaking near the radiator. The contact was informed that the cam phaser and timing chain needed to be replaced. The contact related the failure to TSB: 21N03-S4 (Engine and Engine Cooling) however, the vehicle was not included. The manufacturer was made aware of the failure and filed a case. The contact was referred to the NHTSA Hotline for assistance. The approximate failure mileage was 88,000.

- New Glarus, WI, USA

The contact owns a 2018 Ford Expedition. The contact stated that on various occasions after starting the vehicle, a loud rattling noise was heard. The check engine warning light was illuminated. The vehicle was taken to a local dealer, where it was diagnosed that the cam phaser needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and the contact was advised to file a complaint with the NHTSA Hotline. The approximate failure mileage was 89,000.

- Needham, MA, USA

The contact owns a 2018 Ford Expedition. The contact stated while starting the vehicle to pull out of a parking lot, he heard an abnormal sound coming from the vehicle. There was no warning light illuminated. The contact was able to drive home safely. The vehicle was taken to the dealer to be diagnosed. The contact was informed that the cam-phaser needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 77,000.

- Haughton, LA, USA