Jeep · Known Issues
2018 Jeep Grand Cherokee Problems: 38 Known Issues
2018 model year · 3,920+ owner reports · Updated September 2026
2018 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
2018 model year · 3,920+ owner reports · Updated September 2026
2018 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
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According to Au7o's analysis of 3,920+ owner reports, the 2018 Jeep Grand Cherokee has 38 documented known issues, with 7 rated critical. The most serious are 3.0L EcoDiesel Oil Cooler Failure Causing Oil/Coolant Cross-Contamination and Engine Damage ($500-$4,000 repair), 2014-2019 Grand Cherokee EcoDiesel EGR Cooler Fire-Risk Recall (W79 / 20V-699) ($0-$0 repair), 3.6L Pentastar Upgrade Rocker Arm / Intake Camshaft Lobe Wear Causing Misfire and Tick ($600-$3,500 repair), Recall 18V524000 (U87) — PCM Circuit-Board Voltage Regulator Can Fail, Causing a Stall, Cruise Control That Will Not Shut Off — Wiring Short Circuit Recall (18V332000), 2011-2021 5.7L Persistent Tick or Misfire - Confirm Valvetrain Damage Before Parts and 2014-2020 Grand Cherokee EcoDiesel High-Pressure Fuel Pump Recall (Z46 / 22V-406) ($0-$0 repair). The most commonly reported issue is 2011-2021 Quadra-Lift Warning or Uneven Ride Height - Diagnose Before Parts with 920 owner reports. Across all issues with published estimates, repair costs range from $20 to $4,000. DIY maintenance guides at au7o.io.
EQUIPMENT:OTHER:LABELS
Chrysler (FCA US, LLC) is recalling certain 2022-2023 Jeep Grand Cherokee L and Grand Cherokee vehicles. The air bag warning label may be missing from the dashboard. As such, these vehicles fail to comply with the requirement Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
ENGINE AND ENGINE COOLING
Chrysler (FCA US, LLC) is recalling certain 2014-2019 Ram 1500 and 2014-2020 Jeep Grand Cherokee vehicles equipped with 3.0L Diesel engines. The crankshaft position sensor tone wheel may delaminate, causing the engine to lose its ability to synchronize the fuel injector pulses and cam shaft timing, possibly resulting in an engine stall.
SUSPENSION:REAR:SPRINGS:COIL SPRINGS
Chrysler (FCA US, LLC) is recalling certain 2022-2023 Jeep Grand Cherokee and 2021-2023 Jeep Grand Cherokee L vehicles. The rear coil springs may have been incorrectly installed and detach from the vehicle while driving.
FUEL SYSTEM, DIESEL:DELIVERY:FUEL PUMP
Chrysler (FCA US, LLC) is recalling certain 2014-2020 Jeep Grand Cherokee, and 2014-2019 Ram 1500 vehicles equipped with 3.0L diesel engines. A high pressure fuel pump (HPFP) failure may introduce internal debris into the fuel system, potentially resulting in fuel starvation.
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA
Chrysler (FCA US LLC) is recalling certain 2020 Jeep Gladiator and Jeep Cherokee, 2019-2020 Ram 1500 Pickup, Ram 2500 Pickup, Ram 3500 Pickup, Chrysler Pacifica, Dodge Durango, Jeep Grand Cherokee, Jeep Wrangler, and Jeep Renegade and 2019 Dodge Challenger vehicles equipped with 8.4" or 12" radio displays. A software error can cause the rearview camera image to remain displayed after the vehicle has been shifted out of reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rearview Mirrors."
+ 34 more recalls. Check all on NHTSA.gov
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According to Au7o's analysis of 3,920+ owner reports, the 2018 Jeep Grand Cherokee has 38 documented issues. The most frequently reported are: 3.0L EcoDiesel Oil Cooler Failure Causing Oil/Coolant Cross-Contamination and Engine Damage, 2014-2019 Grand Cherokee EcoDiesel EGR Cooler Fire-Risk Recall (W79 / 20V-699), 3.6L Pentastar Upgrade Rocker Arm / Intake Camshaft Lobe Wear Causing Misfire and Tick. Of these, 7 are rated critical and should be addressed promptly.
The 2018 Jeep Grand Cherokee has 38 known issues documented across 3,920+ owner reports. 7 issues are rated critical: 3.0L EcoDiesel Oil Cooler Failure Causing Oil/Coolant Cross-Contamination and Engine Damage and 2014-2019 Grand Cherokee EcoDiesel EGR Cooler Fire-Risk Recall (W79 / 20V-699) and 3.6L Pentastar Upgrade Rocker Arm / Intake Camshaft Lobe Wear Causing Misfire and Tick and Recall 18V524000 (U87) — PCM Circuit-Board Voltage Regulator Can Fail, Causing a Stall and Cruise Control That Will Not Shut Off — Wiring Short Circuit Recall (18V332000) and 2011-2021 5.7L Persistent Tick or Misfire - Confirm Valvetrain Damage Before Parts and 2014-2020 Grand Cherokee EcoDiesel High-Pressure Fuel Pump Recall (Z46 / 22V-406). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Jeep Grand Cherokee issues range from $0 to $4,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, 3.0L EcoDiesel Oil Cooler Failure Causing Oil/Coolant Cross-Contamination and Engine Damage, typically costs $500-$4,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
The integrated engine oil cooler/oil-filter housing on the 3.0L EcoDiesel develops internal failures that let engine oil and coolant cross-contaminate — owners report 'milkshake' oil and oil in the coolant bottle. Casting debris left in the engine can become trapped in the cooler… Repairs typically run $500-$4,000. Severity: high.
Certain 2014-2019 Jeep Grand Cherokee vehicles with the 3.0L EcoDiesel engine are included in safety recall W79 / NHTSA 20V-699. NHTSA lists 28,884 potentially involved Jeep vehicles. Thermal fatigue can cause the EGR cooler to crack internally over time, allowing pre-heated vapo… Repairs typically run $0-$0. Severity: high.
The updated/'Upgrade' 3.6L Pentastar V6 (used on later WK2 and the WL fifth-gen) suffers premature wear of the intake rocker-arm roller bearings and/or intake camshaft lobes, traced by TSB to a manufacturing issue. As the rocker bearing or cam lobe wears, the valve no longer open… Repairs typically run $600-$3,500. Severity: high.
The 2018 Grand Cherokee is one of the vehicles named in NHTSA recall 18V524000. The defect sits inside the powertrain control module: a voltage regulator chip on the module's circuit board may fail. The failure shows up in one of two ways — the Grand Cherokee stalls while it is b… Severity: high.
Recall 18V332000 covers 2014-2018 Jeep Grand Cherokee models among a long list of FCA vehicles. The defect is in the cruise control system: a short circuit in the vehicle's wiring can leave the cruise control unable to be disengaged once it has been set. According to NHTSA, the d… Severity: high.
A persistent tick and cylinder misfire on a 5.7L Grand Cherokee can be consistent with valvetrain damage, but those symptoms do not identify a failed MDS lifter or worn camshaft by themselves. Exhaust-manifold leaks, ignition or injector faults, oil-pressure problems, rocker/push… Severity: high.
Certain 2014-2020 Jeep Grand Cherokee (WK) vehicles with the 3.0L diesel engine are included in safety recall Z46 / NHTSA 22V-406. The high-pressure fuel pump can fail prematurely and introduce internal debris into the fuel system, causing fuel starvation. FCA says occupants may… Repairs typically run $0-$0. Severity: high.
Quadra-Lift is a closed, electronically controlled air-suspension system, so a Service Air Suspension message, a low corner, or a denied height change does not identify one universal failed part. The factory diagnostic path covers electrical and communication faults, fuses and vo… Severity: medium.
The ZF 8HP 8-speed automatic transmission can exhibit harsh shifts, hesitation, or erratic behavior. Some owners report the transmission hunting between gears or feeling like it's in the wrong gear for the driving conditions. Repairs typically run $150-$2,500. Severity: medium.
The water pump on the 3.6L Pentastar V6 can fail, causing coolant leaks and overheating. The pump is internal and driven by the timing chain, making replacement labor-intensive. Failure often occurs between 80,000-120,000 miles. Repairs typically run $800-$1,800. Severity: medium.
Oil found around the Pentastar oil filter adapter does not prove that the complete adapter or oil cooler has cracked. FCA's service guidance separates several repair paths: a cap O-ring that is cut, damaged, or installed in the wrong groove; five adapter bolts that are not at the… Severity: medium.
The electronic-throttle-control warning lamp and reduced-power or limp mode are protective responses, not a diagnosis that the throttle body has failed. Depending on the stored DTC and application, the factory path may lead to a stuck or contaminated throttle plate, throttle moto… Severity: medium.
Uconnect resets or a blank screen, intermittent accessories, a discharged battery, and communication faults may occur together, but they do not establish that the Body Control Module is defective. Radio software or hardware, a weak battery or charging problem, poor power or groun… Severity: medium.
FCA TSB 18-001-26 covers a 2018 WK Grand Cherokee equipped with the 6.2L supercharged ESD engine and 8HP95 DFS transmission when P0420 and/or P0430 is stored. A customer may also report reduced engine power associated with catalyst damage and restricted exhaust flow. The bulletin… Severity: medium.
A WK2 front-end clunk over bumps, during braking, or while steering can come from more than the sway-bar links or lower control arms named in the old card. The source can vary with loading and may involve a stabilizer link or bushing, control-arm bushing, ball joint, tie-rod end,… Severity: medium.
Grand Cherokee 4x4 differentials (and the transfer case) are a known spot for pinion-seal leaks — owners find gear oil weeping where the driveshaft meets the diff, leaving puddles and, if ignored, running the diff low on lube. A low/contaminated differential then produces a speed… Repairs typically run $150-$900. Severity: medium.
WK2 Grand Cherokees commonly develop a speed-dependent driveline vibration or shudder felt through the floor/seat, typically appearing around 45-75 mph and often worse under light acceleration or on deceleration. The rear driveshaft uses CV-style joints and a splined slip section… Repairs typically run $100-$1,200. Severity: medium.
Owners of panoramic-sunroof-equipped Grand Cherokees (WK2 and 5th-gen WL) report the glass panel spontaneously shattering or 'exploding' with a loud pop while driving on clear days, with no impact. NHTSA complaints and forum reports describe the tempered panel bursting outward/in… Repairs typically run $800-$2,000. Severity: medium.
The 3.6L Pentastar's oil filter housing is an integrated plastic oil-cooler assembly that mounts in the valley under the intake manifold. The plastic warps and becomes brittle from repeated heat cycling — expanding and contracting at a different rate than the aluminum engine — so… Repairs typically run $400-$900. Severity: medium.
Because the A/C condenser sits at the very front of the Grand Cherokee behind the grille, it is highly exposed to rocks and road debris, which puncture the thin tubes and cause refrigerant loss. Condenser leaks are one of the leading causes of an A/C that blows lukewarm or no col… Repairs typically run $400-$1,200. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.