2007 Ford Mustang lights problems

Filed Dec 26, 2025 · Electrical, Lights · OH

The vehicle has experienced repeated and ongoing electrical system failures, including chronic battery drain that causes the vehicle to fail to start, erratic HVAC operation where controls do not function as intended, and persistent water intrusion into the doors and interior areas. The HVAC malfunction has resulted in the inability to properly defrost or defog the windshield while driving, significantly impairing visibility and creating an immediate safety hazard. These issues appear consistent with failure or corrosion of the Smart Junction Box (SJB) or related electrical control components. Replacement Smart Junction Boxes are unavailable through both Ford and aftermarket sources, preventing proper repair of the defect. The electrical instability and water intrusion present a risk of sudden loss of vehicle operability, impaired visibility, and unpredictable electrical behavior while the vehicle is in motion, creating a safety risk to the driver, passengers, and others on the road. The issues are recurring and reproducible.

Filed Dec 3, 2019 · Engine, Lights · 14,000 miles · TX

Im having a hard time with my car to get it started. It takes about a minute to start it. I took it to autozone to get it checked and they gave me the report issue the report shows: p0607 control module performance. Also I been having to refill coolant box more often I bealeive it has a leak. Iam very concerned its my only car and I have 2 kids that I have to drive to school and daycare.

Filed Jan 7, 2018 · Body, Fuel system · OH

Stafty

Filed Apr 17, 2017 · Electrical, Engine · 85,000 miles · PA

Tl* the contact owns a 2007 ford mustang. While turning on the headlights, the engine stalled. The contact stated that the vehicle could not be driven with the headlights activated. The vehicle was taken to an independent mechanic, but was not diagnosed or repaired. The manufacturer was made aware of the failure and informed the contact that the vehicle was no longer under warranty. The failure mileage was 85,000.

Filed Apr 8, 2016 · Electrical, Lights · 125,000 miles · LA

Tl* the contact owns a 2007 ford mustang. When the vehicle was parked, the contact turned the key between the accessory and off position and the engine started and the vehicle moved without touching the gears. Also, the brake lights, hazard lights, and headlights failed to illuminate. The dealer and manufacturer were not notified of the failures. The VIN was unknown. The failure mileage was 125,000.

Filed Sep 3, 2013 · Lights · 998 miles · PA

Tl* the contact owns a 2007 ford mustang. The contact stated that he was informed by another driver that the brakes lights were illuminated. The contact inspected the vehicle and found that when the clutch was depressed, the brake lights illuminated because the bracket that connected the clutch and brake pedal stretched enough to cause the illumination of the brake lights. The manufacturer was made aware of the failure. The vehicle was not repaired. The approximate failure mileage was 998.

Filed Oct 18, 2011 · Body, Electrical · 34,000 miles · CT

Went to drive my 3 and a half year old mustang to work the other day after a big rainstorm. Noticed a musty mold smell but assumed it was nothing. As I drove my car up my driveway, (a slight incline) gallons of water spilled out from under the dashboard on the passenger side behind the glove box. Used a carpet extractor to vacuum up over 2 gallons of water (no kidding, emptied 1 gallon extractor tank 3 times) brought the car to the dealership where it was purchased and was informed that the car needed a repair that was outlined in a technical service bulletin from ford, but because my car was no longer under warranty, I would be responsible for paying for the repair -and that the gem module needed to be replaced as the water had poured into and damaged it. The price for this, not including replacing the ruined carpet and pad or the rusted seat mounting brackets was over $1100. It says right in the tsb from ford that this issue is caused by gaps in the sealant around drainage grommets inside the firewall, yet somehow this is the customers problem??? Researching online I've encountered hundreds of horror stories from other owners with the same issue, but ford has been denying this since at least 2005. (6 years!!) they need to be forced to recall these vehicles as it is painfully obvious that they refuse to do so voluntarily... The 3 year old vehicle is now a moldy health hazard and I'm told that it's just a matter of time before the electrical problems begin.thank you for providing me a forum to vent my frustrations over my "swamp buggy" as I have gotten no satisfaction anywhere else. [xxx] information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).

Filed Apr 17, 2011 · Acceleration, Body · 8,500 miles · RI

2007 manufacturing defect: extensive leaking of water into electrical components. Causing lights to go off,or sometimes go on without switching on, windows go up and down by themselves, occasionally motor cuts out on highway, cruise control operates intermittently. Eventually this will also result in premature structural damage.

Filed Mar 2, 2010 · Lights · 45,000 miles · OH

2007 ford mustang-v-6, the section junction boxes and computer,wiring harnesses have leaks that are caused by a known flaw in the design of grommets from the door and drain holes which drip into and short out the electrical systems and lights and ABS components. All lights go out. All inside instruments shut down. 800.00 to repair. Ford has a tsb but will not assist. It causes major problems rear defroster and wipers. Alot of 2005-2009 mustangs have the same or will have the same problems. I did not have any brake lights, or turn signals. I had people run into the back because they did not see my signals. Which quit working totally. I did not know.

Filed Aug 29, 2007 · Brakes, Electrical · 6,700 miles · MI

Tl*the contact leases a 2007 ford mustang. The contact stated that the electronic remote does not work. If the door is opened manually, it shuts downs the electronic system and the brake lights. The failure was noticed while driving 40 MPH. The system will operate normally after a few minutes. The dealer replaced the instrumental panel and modules, but the failure was not corrected. The dealer information was unknown. The current mileage was 8,062 and failure mileage was 6,700. The dealer stated problem with rear axel assembly. Updated 09/26/07