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Jeep Wrangler Problems

Find the most common issues based on Jeep Wrangler owner complaints.
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Most Common Jeep Wrangler Problems

Water can leak near the A-pillar, at the front edge of the driver and passenger side doors. An improved seal is available.
Jeep issued a recall on the ignition switch because the switch could short-circuit in the presence of water or impurities.
The throttle position sensor (TPS) may fail causing intermittent drivability problems like hard starting, stalling, and/or hesitation when accelerating. A failed TPS will require replacement, p...
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2 Known Jeep Wrangler Brakes Problems

Due to warped front brake rotors or variations in the thickness of the rotors, brake pulsations may develop. The best method to reduce pulsations is to use an "On the Car" brake lathe (as long as t...
The ABS light can come on, indicating an ABS pump motor circuit fault. This is most likely to occur in warmer areas (above 90° F) and usually after a quick stop, like a refueling. If no faults ...

8 Known Jeep Wrangler Drive Train Problems

Leaks at the front and/or rear differential pinion seal and from the transfer case are common. Leakage from the transfer case normally occurs at the case-mating surfaces and require removal of the ...
Due to the design of the reverse gear system in the AX-15 manual transmission, it may block shifting into reverse one out of every ten attempts. An updated reverse gear is available if the concern ...
If the clutch is slipping when the clutch disc is 2/3 worn or if the clutch slave cylinder dust boot is torn, there may be insufficient clearance between the clutch slave cylinder and the clutch ho...

3 Known Jeep Wrangler Electrical & Lights Problems

Jeep issued a recall on the ignition switch because the switch could short-circuit in the presence of water or impurities.
A no crank or no start condition may develop due to electronic lockup of the wireless control module (WCM), also referred to as the Sentry Key Remote Entry Module (SKREEM). When this module fai...
If the fuel gauge is inaccurate or not working, it may because the fuel tank has bowed upward and interfered with, or damaged the sending unit (fuel level sensor). If the fuel tank has bowed, fuel ...

4 Known Jeep Wrangler Engine Problems

Engine oil leaks from the valve cover gasket, oil pan gasket and timing cover gasket are common.
Some models are susceptible to rear main oil seal failures in dirty or dusty conditions. As dirt and dust collect on the oil seal, the abrasion wears through the sealing surface. A spacer is used b...
A Check Engine Light may illuminate indicating a "Cylinder #3 Misfire." This normally occurs in hot weather after the vehicle has been driven, parked for ten to twenty minutes, and then restarted. ...

5 Known Jeep Wrangler Exhaust & Emissions Problems

The throttle position sensor (TPS) may fail causing intermittent drivability problems like hard starting, stalling, and/or hesitation when accelerating. A failed TPS will require replacement, p...
A ticking type noise may be noted from the engine area due to an exhaust manifold that has cracked where the pipes are welded; cracked manifolds should be replaced.
The throttle body may accumulate an oily, black residue in the bore and on the throttle plate causing hard starting or possibly stalling when coming to a stop. The throttle body should be cleaned d...

4 Known Jeep Wrangler Heating & Air Conditioning Problems

If water leaks into the passenger compartment and under the passenger side carpet, an heating, ventilation and AC (HVAC) drain hose is available.
The AC evaporator may freeze after extended use of the air conditioner. The output may feel low due to the restricted evaporator. Once the ice buildup melts, the AC operates normally. A revised low...
If a growling noise can be heard from the AC compressor while the AC is on, a revised compressor is available which should correct this problem.

0 Known Jeep Wrangler Maintenance Problems

5 Known Jeep Wrangler Miscellaneous Problems

Water can leak near the A-pillar, at the front edge of the driver and passenger side doors. An improved seal is available.
A cleaner/lubricant is available from Mopar for when the soft top window zippers become stiff or difficult to move. Our technicians note this product works very well when the directions are followe...
The tailgate hinges can corrode making it difficult to open the tailgate.

3 Known Jeep Wrangler Suspension & Steering Problems

Loose or worn suspension and steering components can cause a wobble or shaking in the steering wheel. It may happen at a certain speed and subside as the vehicle accelerates through the range. Tire...
When normal alignment practices do not bring components into the alignment specifications, offset upper ball joints are available.
2.5L 4 cylinderIf the power steering pump pulley is not installed in the correct position on the pump shaft, the drive belt may make a chirping noise and sound as though it is coming from another c...

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Known Jeep Wrangler Problems & Complaints

Internal leaks in the speed sensor or speed sensor gear adapter (speedometer adapter) are common. A revised speed sensor (white in color, old versions are black), used in production since November ...
The tailgate hinges can corrode making it difficult to open the tailgate.
Side bars located near the door opening (on the sunrider soft top) may break or a pivot link may break. There are pivot links and side bars available so a complete soft top assembly may not be need...
The hood support rod can rattle against the radiator driving over rough roads or when the doors are slammed. Installing a foam ring on the support rod can help to prevent the rattling.
A loud buzzing or whining when the transmission is in reverse may be caused by a regulator valve in the transmission valve body. A revised valve was released that does not resonate. Careful diagn...
If the fuel gauge is inaccurate or not working, it may because the fuel tank has bowed upward and interfered with, or damaged the sending unit (fuel level sensor). If the fuel tank has bowed, fuel ...
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