2007 Titan le 4WD, with 72,000 miles. In Dec 2018 my right turn signal indicator would flash once and quit while driving but issue is replicated driving or stationary, engine on or off. I had the cruise control engaged and hitting the right turn signal tripped it off, as if I'd tapped the brakes. A week earlier, I started having intermittent issues with my backup sonar warning system then complete failure. Later troubleshooting the turn signal issue, I realized when I hit the brake, the right front turn lamp would illuminate while the brake pedal was depressed. I realized if I held or rode the brake pedal, then engaged the right turn signal, the right turn lamps and indicator worked normal, until I released the brake, then the right turn signal lamps would quit. Also noticed that all clearance lamps, tail and stop lamps fluctuated a little in sync with the turn signal operation. I realize I've got an electrical short. Checked what I could and could not find the problem and decided to take it to my car repair guys. This morning, when I started it for the trip, I had warning lights on for low tire pressure (flashing, then steady, then flashing), ABS (steady) and slp (steady), and said it was in 4WD when the dial was in 2wd. Never had that happen before. After 5 miles the 4WD indicator went off and the 2/4WD graphic was back my shop found a melted wire bundle above my exhaust where the tailpipe exits the muffler. They say it looks like a heat shield is either missing or that one should be there. However, the mechanic says it is not safe to drive as several key systems wires pass in that bundle that has indications of excess heat and may have partially melted which could create shorts that could make other vital systems fail, or create a fire hazard. I've seen several other reports of similar issues online. Still in the process of diagnosing and repair.

- Wentzville, MO, USA

Door lock actuators stopped working causing a safety concern cern when needing to quickly exit the vehicle. Cruise control buttons stopped working as well. Vehicle has been clipped and also been involved in a rear end collision where on both occasions, the air bags did not deploy. Very concerning!

- Middleburg, FL, USA

My 2007 Nissan Titan was parked for 2 days, at 5:30 am August 12, 2014 I heard the trucks horn sounding off with just a constant blast. I went out to investigate an notice the wind shield shattered and my keyless remote would not turn off the horn. I opened drive side door, black dense smoke filled the cab and the center of the dash had a large hole and the temperature inside the cab was intense, but no flames.I sprayed down the area with my extinguisher, horn still engaged I disconnected battery.items that were stored in a top compartment of the dash, ended up on the driverside seat tells me that some kind of explosion occurred, not just electrical and the items were not burnt. All wiring, blowers, everything in and around the dash was destroyed, and still do not know the cause.I had to have all replaced.reminder truck not used for two days.

- Imperial, CA, USA

1) my truck brake down on the 91 freeway for lack of gas eventhough the gas gauge registered a quarter tank. Towing cost me over $ $400 2 ) the oil gauge register 1/2 full at all times.when the engine light is on indicating it needs oil or after an oil change, the gauge still registers 1/2 full. 3) my aircondition works well.the heater malfunctions all the time. Sometimes it heats up sometimes it does not. 4) my engine has oil leak..starting June of 2013, whenever I start my engine, I get a lot of blue smoke from the exhaust pipe it last for a several seconds. The more oil in my engine the greater the amount of smoke the less oil the less smoke. I put in a minimum of 2 to 3 quarts of oil weekly in my engine to keep up with the oil consumption.

- Los Angeles, CA, USA

My ECM has failed twice, once in Sept. 2010 and March 2012. I have been getting the run around with by the Nissan dealership about the what is wrong with my Nissan Titan. The truck as quit on me several times once at a red light during on a very busy street and several other times at the grocery store and my home. I have called the customer satisfaction hot line for a resolution and my attempt was unsuccessful. I really need help with this situation this is my only transportation and this issue cannot continue to go on being ignored.

- Gulfport, MS, USA

Electrical issues, clock not keeping time when vehicle is turned off, heater/ A/C intermittently shuts off/ and /or does not work at all. Tire sensors on, windshield wiper sensor flashes on and off. All power to dash has shut off for a few seconds while driving, windows would not roll down when this happened. Smell gasoline strong, filled gas tank and needle was not registering full until driving for several minutes, then went down 1/4 then back to full.

- Wrightwood, CA, USA

Column shifter causes damage to wiring harness of the manual mode transmission button. When shifting vehicle into drive, column hits wiring harness, and over time causes wiring to the transmission manual mode button to break. Once this breaks, there is no means to down shift vehicle, causing a hazard especially when traveling roads where there are elevation changes. Was able to determine the cause of the manual mode button failure by researching Nissan Titan forums (club Titan and Titan talk). Upon removing steering column shroud immediately noticed chaffing of the wiring harness, and the broken wire. Contacted Nissan, Nissan was not concerned with this issue due to the age (currently 3 years) of the vehicle.

- Fairbanks, AK, USA

A 7 way trailer plug adapter was plugged upside down into a 2007 Nissan Titans receptacle socket and it caused the chassis wiring harness, the engine wiring harness and the main wiring harness to all melt down. Other electrical components are also probably damaged. It would appear that there was not a properly designed circuit to limit the damage to the electrical system or it malfunctioned. Although the vehicle did not catch fire, the plastic coating on the wiring was melted down, the plug adapter was very hot and it potentially could have resulted in a fire if the plug would have been left in long enough. It is suggested that this defect be investigated by Nissan.

- Highland, UT, USA