2018 Jeep Grand Cherokee electrical problems

Adhesive bonding the digitizer to the LCD screen breaks down due to heat, humidity, or temperature cycling, causing the touchscreen to separate and trigger phantom button presses. Owners report the screen becomes sticky, leaks liquid onto internal components, and generates constant unwanted inputs to vehicle systems.

When: Typically 3–5 years of ownership; one owner reported it after a firmware download; escalates from minor glitches to constant malfunction every 1–2 seconds; no warning signs before onset

Symptoms owners cite: Radio stations change randomly while driving; Volume increases or decreases without input; Phone application makes calls to contacts or dials 911 without user action; Heated seats or steering wheel warmers activate and cannot be turned off; Backup camera activates while driving forward on highway; Climate control toggles between heat and AC without input, including defrost deactivating in adverse weather; Navigation system randomly activates and changes routes to incorrect destinations; Screen displays clock/time input repeatedly and blocks access to other functions; Constant beeping and audible alerts from phantom inputs; Rear-view camera flashes on screen without engagement; Seat cooler or heater turns on/off erratically; Screen becomes unresponsive to driver input while processing phantom touches; Screen goes completely black or freezes in critical moments (e.g., while backing up); Visible bubbling, air pockets, or separation at screen edges; Sticky liquid or melted adhesive visible on console below screen

Repairs/costs cited: Dealership replacement costs reported at $1,400–$2,000 plus $150–$300 diagnostic fee (which dealerships charge even when the issue is known). One owner reported $1,600–$2,000 with labor. Some dealers acknowledge the problem as a 'known issue' but refuse coverage out of warranty. Stellantis and FCA refuse coverage after expiration of manufacturer's 3-year/36,000-mile warranty, citing 'company policy' that non-original owners do not qualify for goodwill coverage.

Recalls/TSBs owners mention: Stellantis/FCA/Jeep Customer Care acknowledges the defect but refuses recall or coverage once warranty expires. Dealers report it as 'common problem' and 'known issue' but offer no remedy. One owner with a case open at Chrysler Cares (case #81357273) received no assistance. No recall has been issued despite hundreds of complaints documented online and on forums (jeepgarage.org, ramforumz.com, etc.). One dealer offered a software update that did not resolve the issue.

Vehicle loses all electrical power while in motion, causing engine shutdown, loss of power steering assist, loss of power braking, and inability to restart. Vehicle becomes immobilized on road or highway, posing severe safety hazard. May be triggered by moisture in wiring, sensor failure, or PCM/BCM malfunction; root cause often undiagnosed.

When: Occurs at variable mileages: one owner at 2,000 miles, another at 13,500 miles, another at 65,524 miles; timing ranges from early in ownership to later years; repeats unpredictably over months or years

Symptoms owners cite: Engine shuts off completely while driving at 25–65 mph; Power steering becomes inoperable; steering wheel locks or becomes extremely difficult to turn; Brakes become inoperable or extremely difficult to press; Vehicle will not shift out of park or neutral after stall; Vehicle will not restart on-scene; requires jump-start from another vehicle or tow truck; Dashboard lights flicker and illuminate multiple warning messages: 'Service Stability', 'Service Transmission', 'Check Your Transmission', unknown codes; Check Engine Light illuminates; Vehicle is locked out after shutdown (cannot access interior controls); Failure recurs repeatedly over time despite repair attempts; Vehicle operates normally after restart but stalls again hours or weeks later

Codes mentioned: Multiple unspecified codes (one owner reported 50+ codes with no clear root cause), P0456 (Small Leak in Evap System – one owner reported this as trigger for subsequent cascade of electrical failures)

Repairs/costs cited: Repairs attempted include: alternator replacement, water pump replacement, fuel pump module replacement, sensor replacement, loose sensor re-seating, BCM/PDM replacement, wiring harness replacement, secondary battery replacement (for stop/start system), purge valve and hose replacement. Despite repairs, failures recur in multiple cases. One owner spent 2 weeks at dealership with vehicle changing BCM and PDM before resolution. Another had vehicle in dealership for over one month with no resolution. One dealer performed a 'PIN drag test' checking every wire and code one at a time; status unknown.

Recalls/TSBs owners mention: Manufacturer notified in some cases but no recall issued. One owner referenced NHTSA Campaign 18V524000 (Electrical System) but repair attempts failed. Dealerships unable to replicate issues on subsequent visits, leaving owners unrepaired. Chrysler directed dealership to perform diagnostic PIN drag test but did not provide repair guidance. No goodwill coverage offered.

After a low-speed front-end collision, the engine RPM spikes violently and the vehicle accelerates uncontrollably in reverse, even with the brake pedal fully depressed. Brakes do not respond. Vehicle reaches 40–50 mph in reverse and strikes multiple parked vehicles before coming to a stop.

When: Immediately after low-speed front bumper collision in parking lot; September 2018

Symptoms owners cite: Engine RPM spikes extremely high immediately after collision; Vehicle accelerates in reverse at high speed despite firm brake pedal pressure; Brake pedal remains 'rock solid' but does not activate braking function; Vehicle reaches 40–50 mph in reverse and strikes four parked vehicles; Two of the struck vehicles are totaled

Repairs/costs cited: Not reported

Recalls/TSBs owners mention: No manufacturer response reported. Police officer on scene interviewed driver and determined operator was of sound mind and not under the influence, finding no operator error. Owner was advised by sales associates and technicians to contact Jeep corporate, indicating no local resolution was available.

The Fuel Pump Module (TIPM) or fuel pump relay fails intermittently, leaving the vehicle unable to start or causing it to stall while driving. Vehicle becomes stranded in potentially dangerous locations. Issue is compounded when occurring on roadways or in remote areas.

When: Intermittent over months or years; one owner reported first failure at low mileage

Symptoms owners cite: Vehicle refuses to start intermittently; Vehicle stalls while in motion; Vehicle becomes stranded for extended periods before power returns; Multiple start attempts required; No fuel pump engagement sound on start attempt

Repairs/costs cited: TIPM fuel pump relay replacement required in one case; cost and parts information not provided by owners.

Recalls/TSBs owners mention: No recall issued. Dealership acknowledged 'frequent warranty replacements' of TIPM but refused to assist out-of-warranty owners.

Wipers behave erratically: front and rear wipers operate opposite to control input, become stuck mid-sweep, or cease functioning entirely. In one case, all three brake lights remained illuminated during normal operation regardless of brake pedal engagement. Brake light circuit failure occurred with hydraulic control unit reading 120 psi when pedal was unpressed.

When: During rain or weather that prompts wiper engagement; brake light issue discovered during pre-trip checks

Symptoms owners cite: Front wipers start, run for several revolutions, then stop without input; Wipers respond only when control moved in opposite direction; Front wipers fail entirely during heavy rain, leaving driver unable to see road; Rear wiper starts and becomes stuck mid-sweep; All three brake lights remain illuminated during normal driving without brake pedal engagement; Vehicle can be shifted out of park without pressing brake pedal (safety bypass failure); No warning lights illuminate for brake light malfunction

Repairs/costs cited: Wiper repair attempted by dealer: front wiper motor replaced, then BCM replaced, finally PDM replaced before resolution. Brake light issue: hydraulic control unit replaced by independent shop; failed part had Julian date code 8228, which falls within the range (8166–9106) specified in the 2011–2022 Grand Cherokee brake recall NHTSA 23E-019.

Recalls/TSBs owners mention: Recall 21A NHTSA 23E-019 issued for brake light control unit failure in 2011–2022 Grand Cherokees, but owner's vehicle (with failed part in the affected date range) did not qualify for the recall, and FCA refused to reimburse repair cost of the hydraulic control unit replacement ($1,000+).

The stop/start feature malfunctions while the vehicle is stopped in traffic. The accelerator pedal does not respond when depressed, the vehicle cannot be shifted into gear, and the ignition cannot be turned off. Vehicle is stranded for 10–15 minutes before resuming normal function.

When: While stopped in traffic; failure mileage reported at 2,000 miles

Symptoms owners cite: Stop/start feature becomes inoperable while vehicle is stopped in traffic; Accelerator pedal depressed but vehicle fails to respond; Vehicle cannot be shifted into gear; Vehicle cannot be turned off; Vehicle is immobilized for 10–15 minutes; Vehicle resumes normal function after 10–15 minutes without external intervention

Repairs/costs cited: Dealership diagnosed wiring harness failure on first visit; replaced harness. On second visit, secondary battery (controlling stop/start) diagnosed as depleted and replaced. On third visit, same failure recurred.

Recalls/TSBs owners mention: Manufacturer was contacted and informed of recurrence, but no resolution provided.

Vehicle exhibits 'ghost' electrical behavior where exterior lights flash, doors lock/unlock, windows become unresponsive, and heated seats activate without driver input. In one case, while the vehicle was parked curbside at an airport, the system reset after multiple minutes of erratic behavior.

When: Intermittent, escalating during specific incidents (e.g., while parked at airport); symptoms persistent over months

Symptoms owners cite: Exterior lights flash and flicker unexpectedly; Doors lock and unlock without key fob or interior button input; Windows become unresponsive to control input; Heated seats activate spontaneously in warm weather; Vehicle cannot be exited (doors remain locked despite unlock attempts); System exhibits erratic behavior for extended periods before resetting

Repairs/costs cited: Uconnect radio screen was delaminated and identified as the source of unintended inputs; repair cost quoted at $1,400+. Owner did not proceed with repair due to cost and warranty expiration.

Recalls/TSBs owners mention: Dealership unable to reproduce issue on multiple visits and offered no corrective action. Stellantis expressed sympathy but stated inability to offer assistance. Owner filed complaints with Massachusetts Attorney General's Office.

ABS control module defect causes failure of Anti-lock Braking System and Electronic Stability Control, with potential for unintended vehicle movement even while stationary. NHTSA recall 24V-838 and manufacturer stop-sale order VIR 2024-11-14 issued November 2024, prohibiting sale or delivery of affected vehicles until repaired. One owner unknowingly purchased a recalled, unrepaired vehicle from a dealership in violation of the stop-sale order.

When: Defect present in affected vehicles at time of manufacture; stop-sale order issued November 14, 2024

Symptoms owners cite: ABS system disables; ESC system disables; Potential for unintended vehicle movement even when stationary

Repairs/costs cited: Recall repair required; one owner paid $770 out-of-pocket for Electronic Throttle Control sensor repairs on June 15, 2025, after loss of throttle response. Vehicle still awaiting manufacturer inspection to determine if defect is linked to broader recall.

Recalls/TSBs owners mention: NHTSA Recall 24V-838 / Manufacturer Recall 94B issued November 7, 2024. Stop-sale order issued November 14, 2024, prohibiting sale of affected vehicles. However, dealership sold a recalled, unrepaired vehicle to owner after the stop-sale order was in effect, in direct violation of the order.

The infotainment system overheats during operation, exceeding safe operating temperature (reported at over 100°F when manufacturer stated safe operating limit is 80°F). Overheating causes heat or AC to activate independently and become uncontrollable, the system attempts to reboot repeatedly, the battery discharges, and other electrical functions become inoperable. System replacement does not resolve the issue.

When: During warm weather operation; failure mileage at approximately 16 miles (very early in vehicle ownership)

Symptoms owners cite: Infotainment system overheats to over 100 degrees Fahrenheit during normal operation; Heat or air conditioning activates independently and cannot be turned off; System reboots repeatedly until battery is depleted; Multiple electrical functions become inoperable; System failure recurs even after replacement

Repairs/costs cited: Infotainment system was replaced, but failure recurred. Vehicle taken to multiple dealers (Garden City Jeep, East Hills Jeep, Bayside Jeep) for additional diagnosis.

Recalls/TSBs owners mention: Manufacturer was notified. Manufacturer informed owner that infotainment system is safe to operate at 80 degrees; however, actual operating temperature during use exceeded 100 degrees, indicating design or manufacturing defect.

Front left headlight and front left turn signal failed simultaneously after a sequence of electrical disruptions (vehicle shutdown, wiper malfunction, horn activation, warning lights). Vehicle would not start after these failures occurred.

When: January 14–15, 2023; occurred after Purge Valve and Hose replacement by dealership on January 9, 2023

Symptoms owners cite: Vehicle engine shut off while driving one block after dealership repair; Electronic stability warning illuminated; All windshield wipers randomly started; Horn randomly started; Interior and exterior lights flashed; Front left headlight burned out; Front left turn signal failed; Vehicle would not restart

Codes mentioned: P0456 (Small Leak in Evap System – pre-existing, resolved initially, but may have triggered cascade of failures after dealer repair)

Repairs/costs cited: Dealership charged $500 for diagnostic and replaced Purge Valve and Hose on January 9. After failure on January 15, dealership quoted $700 for electrical diagnostic. Owner did not proceed due to cost.

Recalls/TSBs owners mention: No response reported. Dealership unable to provide explanation for cascade failure immediately following their repair work.

Electrical system malfunctions with 50+ diagnostic codes present; vehicle cannot shift gears, dashboard illuminates with multiple warning messages, gauge cluster goes dark, and shifter malfunction message appears and disappears. Issue recurs repeatedly despite month-long repair attempts. Dealership unable to identify root cause.

When: Intermittent; failure episodes separated by weeks; recurring for months

Symptoms owners cite: Dashboard lights up with multiple warning lights and messages; Vehicle will not shift gears; Windshield wipers engage unexpectedly; Message appears: 'Do not turn off vehicle; it may not restart'; Vehicle stuck in run position and cannot be turned off; Gauge cluster goes completely dark; Shifter malfunction message appears and disappears repeatedly; Vehicle shuts off unexpectedly while driving; Multiple restart failures

Codes mentioned: 50+ unspecified codes (dealership unable to determine root cause)

Repairs/costs cited: Loose sensor re-seated; issue recurred within one week. Dealership recommended PIN drag test (checking every wire and code individually). Vehicle was in dealership for over one month with no resolution as of complaint filing date.

Recalls/TSBs owners mention: Chrysler directed dealership to perform PIN drag test but provided no clear repair guidance. No recall issued.