NHTSA Complaint #11491725 — 2012 JEEP GRAND CHEROKEE

The brake booster of my 2012 Jeep Grand Cherokee that was supposedly inspected and or replaced as part of a recall that I had performed on the vehicle on 12/22/2017 has intermittent failure. Prior to having the recall work performed on the brake booster I had no issues with my power brake systems. However, within a year of having the recall work done I had the BRAKE warning light come on while driving and noticed that my brake pedal was extremely firm when trying to start my vehicle. I made an appointment at a Jeep dealer to have the problem diagnosed and fixed immediately but the problem went away before my scheduled appointment. The problem recurred (BRAKE warning light and extremely firm brake pedal upon starting) about 2 weeks ago. I immediately drove to the nearest dealership and asked that they scan what error code was causing my BRAKE light (suspecting that it was a faulty brake booster but wanting a definitive diagnosis prior to pursuing the matter). Thankfully even though the light had gone off by the time I got it to the dealer they said the error code was still stored and came back as "C0021-02" or "Brake Booster - General Signal Failure" that likely indicates a failing brake booster BUT the dealer also said I was out of warranty and so no work would be covered even though the brake booster recall work led to this dangerous intermittent failure. I have had multiple occasions recently where my vehicle has taken longer to stop than expected and I never know when its going to happen and so I have to leave very long stopping distances now or else risk rear-ending a stopped vehicle if my brakes randomly stop working effectively (also to keep my kids safe from being in an accident when I need to get them to school). I can provide the brake booster for inspection if/when this defective part is replaced properly at the manufacturer or the dealership's expense. The time and specifics below refer to the first time the first time the BRAKE light activated.