2005 Ford Mustang: water leaks into the cabin

Filed Oct 14, 2021 · Electrical · 40,000 miles · NE

The contact owns a 2005 Ford Mustang. The contact stated that one day after a rainstorm she noticed several unknown warning lights were illuminated. The contact stated that the headlights were inoperable due to the water leaking into the interior of the vehicle. Additionally, there was water leaking into the interior of the dashboard. There was also water coming out of the driver’s side front air vent and the interior lighting in the vehicle from the interior module and center console. The lights were flickering on and off. The contact took the vehicle to a local dealer however, the dealer was not able to determine the cause of the failure. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 40,000.

Filed May 11, 2018 · Electrical, Engine · 130,000 miles · MO

The 2005 to 2009 mustangs (all of them) have a water intrusion problem presented as a design flaw in the engine firewall that leaks water onto the smart junction block causing random electrical systems failure including the loss of engine ignition, loss of all systems, etc. In my case, the intrusion of water caused a sudden and complete loss of all systems. Discovered a day after heavy rain. There are thousands of reports of this on the web and the dealer admits it is a design flaw and known problem.

Filed Jun 27, 2016 · Acceleration, Body · 10,000 miles · TX

Corrosion on the hood, water leaking on pass. Side door, water leaking under the glove box, bissell and gauges not working, speeds up in excessive speed without giving gas,

Filed Dec 17, 2015 · Electrical, Lights · 89,000 miles · CO

Defect in under cowl drainage leads to rainwater leaking into passenger compartment. Water drains down wiring harness into the smart junction box casing electrical shorts that at first caused the right headlamp to shutdown after 15 seconds. Recycling the headlight switch brings the headlight back on for another 15 seconds. This condition renders the vehicle unsafe to operate from sunset to sunrise. Now the drivers side headlamp has begun the same problem. I checked online and it is apparent that this is a significant safety issue for which the vehicle manufacturer has no part available to fix. They initially informed me that the smj would be available to purchase last september. That has now been pushed back to february of 2016. They want over $400 for the part plus additional labor to program and install a component that should have been recalled years ago. This problem is already covered under a tsb and the defect can cause a multitude of malfunctions that could easily result in life threatening situations. I just recently checked and found over 286 reports on file with the federal safety agency, yet no apparent investigations appear to have been conducted, nor a recall. It is my sincer hope that the federal safety agency is not waiting for a body count before taking action. Http://www.allfordmustangs.com/forums/2005-2010-mustang-talk/301555-pics-vid-2005-dash-water-leak-fix.html#/forumsite/20799/topics/301555?page=1 https://docs.google.com/document/d/1rwsgwtizix5qu_tgsnhlx4mwgnsuji-zs6pjwsa_sre/mobilebasic?pli=1

Filed Mar 26, 2015 · Body · 160,000 miles · OR

Tl* the contact owns a 2005 ford mustang. The contact stated that under the floormat on the passenger side of the vehicle, there was water leaking. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was 160,000.

Filed Sep 4, 2014 · Body, Electrical · 85,000 miles · WI

After a light rain I noticed water dripping into the passenger side kick plate/glove box area. Car would not start. Had it towed to dealer. Started next day and could not replicate problem. Next day, same problem. Water noticeable in passenger compartment. Shook smart junction box and notice water leaking out. Car started and stopped when sjb shaken. Took to dealer. Replaced sjb for $750. Month later same issue, this time car shut off while driving on freeway in rain. Loss of all control, electrical and power. Could not restart. Pounded on sjb and eventually started. Got it back home. Now brakes lights, turn signal, headlights, A/C and display panel not operating. I am surprised that someone has not been killed yet. In trying to solve this issue, it appears that the internet is fully of the same stories. Sickening.

Filed Jul 3, 2014 · Body, Electrical · 68,000 miles · NY

My car shows erratic needle movement and gauges are reading over heat 0 miles per hour while moving and sticks at 120 MPH after use and is parked. Gas meter is off, odometer is off, it's very scary to drive and expensive. Already dealt with the water leak issue form passenger side. Cluster panel is broken I believe. Bad dash board. Hundreds of forums explain same issues on going years on new models. Not safe or fair for ford to not address this death trap.

Filed Feb 26, 2013 · Body, Engine · 7,000 miles · MI

I was driving about 55mph and heard a beep, looked in the dash and saw the engine went into a "fail safe mode". The car slowed down and jerked and slowed down quite a bit. Went to the dealership and could'nt find anything wrong w/ it. It started happening more often, so finally found a mechanic that was able to diagnose and fix the problem for $800. I saw in the paper that a few toyotas had this problem and wanted to let you know it happened on a new ford mustang as well. Also, whenever it rains, (the same car) leaks water into and puddles up under the passenger's seat. This has been a problem from the beginning of purchase. I don't drive this car in the rain because of this. I have talked to other mustang owners at the oil change facility, and they said they have the same problem. I really don't understand why there has not been a coulpe of recalls on the 2005 mustang gt. I waited a long time to get my dream car and paid a lot of money for it. If I'm not the only one having this problem, I would think the ford company should take responsibilty and fix the problems.[xxx] information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).

Filed Nov 18, 2011 · Electrical, Fuel system · 95,000 miles · VA

Failure of instrument cluster and water leak in passenger side foot well. Speedometer non-functioning, fuel indicator non-functioning, and engine temperature gauge non-functioning. Provides serious safety hazard without knowing vehicle speed. Any substantial rain results in water pooling in passenger side foot area, and saturation of fuse box area, which provides concerns for a vehicle-wide loss of electrical power and brake/steering control. I have looked at several online owners' forums and there are numerous cases of this commonly-documented safety problem, but ford motor company refuses to address it until the federal safety agency issues a recall. I have called fmc, and they refused to address the issue.

Filed Oct 3, 2011 · Body, Electrical · 81,536 miles · OH

Tl* the contact owns a 2005 ford mustang. The contact attempted to start the vehicle but it would not start. The vehicle was towed to an independent mechanic where the mechanic stated that water had damaged the electrical system and the computer system, which would need replacing. The contact had previously noticed water leaking from under the passenger side seat onto the passenger's feet. The vehicle was not repaired. The approximate failure mileage was 81,536.

Filed May 24, 2011 · Body · 1 miles · PA

2005 ford mustang convertible. Severe water leakage occurring in passenger side front and rear areas. Water leaks into a compartment that surrounds the cabin air filter and then blows in through the cabin airway and leaks out below the glove box. This has severely damaged carpeting and causes mold and mildew to form. Very bad for anyone who breaths this in while traveling in the vehicle. Currently trying to seal with no luck and see hundreds of complaints on the internet. Occurs whenever vehicle is left outside in rain. The first 5 1/2 years of ownership the vehicle was garage kept. Thank you

Filed May 9, 2011 · Electrical, Lights · 103,000 miles · OH

There is a manufacturer's defect that allows water leakage into the instrument panel/smart box junction and subsequently into the vehicle itself. Resultant issues include the inability to drive the vehicle (frozen shift), electrical failure with loss of instruments including various gauges, brake lights, ventilation/AC, power windows, and headlights, and physical water damage (mold/mildew). Ford is aware of the defect and later models were redesigned to compensate for the flaw. However, ford refuses to issue a recall or acknowledge the deficiency, nor will they provide any kind of financial assistance with the necessary repairs directly caused by this defect. Should the mustang experience the above mentioned electrical failures while being driven, an accident could occur. There are numerous similar incidents reported about this exact same issue, and ford must be held accountable. I spoke to ford "customer service" on 5/5/11 to report the issue and request financial assistance for the repairs. I was told to take my vehicle to the dealership, pay for the diagnostic test, and have the dealership confirm the "defect". I made a follow-up call to ford "customer service" on 5/9/10 to report that the service manager did confirm the defect and that he had seen similar problems. However, ford said they were not responsible, would not provide financial assistance, and that I was "misinformed" by my initial call to ford in giving me hope they could somehow help me. Additionally, they stated that I "should not expect my ford vehicle to last beyond 100k miles". In the meantime, we are responsible for the towing, diagnostic, and repair bills, so the ford service department is profiting from this. This was our fourth ford vehicle, and it will certainly be our last.