Brake Master Cylinder problems of the 2010 Lincoln MKZ

The contact's wife owns a 2010 Lincoln Mkz. The contact stated that after the brake pads were replaced by an independent mechanic, the brake pedal depressed to the floorboard while driving, without warning. The contact's wife had taken the vehicle back to the independent mechanic twice where the mechanic bled the brake lines. The brake pedal and the brake master cylinder were replaced. Despite the repairs, the failure persisted. The contact then took the vehicle to riata Ford (10507 us-290, manor, TX 78653) where the mechanic performed the same repairs as the independent mechanic however, the exact cause the failure was not yet determined. Upon investigation, the contact linked the failure to NHTSA campaign number: 19v904000 (service brakes, hydraulic) however, the VIN was not included. The manufacturer was not notified of the failure. The vehicle was not repaired and remained in the possession of the dealer. The failure mileage was 169,385.

Tl the contact owns a 2010 Lincoln Mkz. The contact stated that the VIN was included in NHTSA campaign number: 19v904000 (service brakes, hydraulic) however, the part to do the recall repair was unavailable. The contact stated while driving 60 mph, the brake pedal was depressed to the floor to stop the vehicle. The contact stated no warning light was illuminated. The contact stated he had to pump the brakes multiple times until it started to work properly. The vehicle was taken the Nissan dealer where he works and had the brake master cylinder and brake booster replaced. The brake lines were flushed. The contact called varsity Lincoln (49251 grand river Ave, novi, mi 48374; (248) 305-5300) where it was confirmed that the part was not available. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. VIN tool confirms parts not available. The failure mileage was approximately 150,000.

The contact owns a 2010 Lincoln Mkz. The contact stated that while driving at 35 mph, the brake pedal was depressed and it felt stiff causing the vehicle to fail to decelerate. The contact also mentioned there was a hissing noise emitting from behind the brake pedal. The failure recurred multiple times. The vehicle was taken to a both a dealer and an independent mechanic where it was diagnosed both times that the power brake booster had failed and needed to be replaced. They also stated that the master cylinder also needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and informed that the VIN was not included in a manufacturers recall related to the failure. The approximate failure mileage was 115,000.

In a stopping situation today I heard a loud pop and then lost all brake pressure. I took the vehicle to a local repair shop and they found a rubber flex hose right off the master cylinder had blown out. This is in an area that is not very easy to get to nor is it near the bottom where salt and road debris can get to. My vehicle is out of warranty by 2,391 miles. I called the Ford Lincoln Mercury hotline and they said I was out of warranty and there was no recalls on this situation. I could have been in a bad accident or hit a child it was very scary. This should be investigated due to the nature of losing brakes is not safe. Hopefully this does not happen to anyone where there is an injury. This should be checked for a possible recall. Thank you in advance.