The turn signals in the front headlights have a known wiring issue and stop working. The unit is all one part, non serviceable and you have to replace the entire headlight assembly at $2055. This causes a significant safety risk to everyone on the road as you are not able to notify your signals/turns. The problem has been reproduced by the dealer, I also have video evidence as well as several…
2018 Jeep Grand Cherokee lighting problems
moderate 12 complaints filed with NHTSA · avg repair $250 · see lighting across all vehicles →
Complaints
12
Recalls
0
Avg fix
$250
What stands out
No new NHTSA lighting complaint has been filed on this vehicle in over 4 years — the issue may be aging out of the active population.
The failure pattern owners describe
Buyer takeaway: The 2018 Grand Cherokee has multiple lighting and infotainment issues: the touchscreen frequently delaminates and triggers phantom touches that distract drivers, exterior lighting can fail from corroded control modules, turn signals may shut off intermittently, and high beam activation is unreliable. Repair costs run $1,000–$2,000+, and dealers often quote out-of-warranty pricing. Verify all lighting systems and the touchscreen function carefully before purchase.
The 2018 Grand Cherokee has earned repeated complaints about lighting and infotainment failures. The 8.5-inch touchscreen is the most consistent issue: owners report the digitizer delaminating from the display, starting at the top edge and spreading downward over weeks. This causes phantom touches that cycle through apps, change radio stations randomly, alter navigation routes, and adjust climate controls while the vehicle is in motion—a serious distraction. Dealers quote $1,000 to $2,000 for replacement, but owners note the replacement part is identical and likely to fail the same way.
Lighting problems run the gamut. Some owners report all exterior lights except the driver's headlight failing, traced to a corroded body control module. Others describe headlights with poor focus and inadequate low-beam output from very early ownership. Turn signal wiring fails inside non-serviceable headlight assemblies ($2,055 to replace the whole unit), and the computer intermittently reports false bulb-out conditions that shut down the signal entirely. High beam activation works only when held in flash mode, not when clicked normally. One owner noted the illuminated dashboard creates a false impression that headlights are on, potentially encouraging unsafe driving. Headlight condensation and lens fogging from bulb heat also appear in the narrative record.
Same Jeep Grand Cherokee lighting reports on nearby years: 2015 · 2021
Failure modes owners describe
Touchscreen delamination and phantom touches
The 8.5-inch center touchscreen digitizer peels away from the display panel, typically starting at the top edges and progressing downward. This causes phantom or 'ghost' touches that trigger unwanted functions independent of user input.
When: Began in top corners and spread across top edge within about two weeks; one owner reported issue first manifested on a hot day parked outside
Symptoms owners cite: Digitizer peeling off screen at top edge; Phantom touches triggering pop-ups and random screen cycling; Clock configuration pop-up appearing repeatedly and blocking screen access; Ghosting causing unintended navigation changes, station cycling, AC/heat adjustments, seat warmer activation; System cycles through radio stations randomly; Bluetooth features unable to function; Distraction and safety concern while driving
Repairs/costs cited: Dealers quote $1,000–$2,000+ for replacement; replacement unit is the same part and subject to same failure
Exterior lighting failure due to body control module corrosion
All exterior lights except the driver's side headlight failed simultaneously. A dealer diagnosed a corroded body control module requiring replacement.
When: Approximately 70,000 miles
Symptoms owners cite: All exterior lights failed except driver's side headlight; Interior lights intermittently flashing on and off without warning; No warning light illuminated on instrument panel
Repairs/costs cited: Body control module replacement needed; initial dealer (Cloninger Ford) unable to service vehicle
Headlight beam focus and output inadequacy
Low beam provides insufficient illumination for night driving; high beam light is improperly focused, concentrating toward the center of the vehicle rather than projecting forward. Dealer stated headlights cannot be adjusted per manufacturer regulations without voiding warranty.
When: Approximately 200 miles (very early in ownership)
Symptoms owners cite: Low beam produces inadequate light for safe night driving; High beam improperly focused to center of vehicle; Poor visibility at night
Repairs/costs cited: Dealer inspection performed; no adjustment possible without warranty voiding; vehicle not repaired
Recalls/TSBs owners mention: Manufacturer made aware of failure
Front turn signal wiring failure
Front headlight turn signal wiring fails, causing turn signal function to stop working. The signal assembly is non-serviceable and integrated into the complete headlight assembly, requiring full replacement.
When: Several months of operation before becoming more prevalent and frequent
Symptoms owners cite: Front turn signals stop working; Dashboard intermittently flashes bulb-out warning; Loss of ability to signal turns to other drivers
Repairs/costs cited: Entire headlight assembly replacement required at $2,055; problem reproduced by dealer and confirmed broken
High beam activation switch malfunction
High beam headlights do not activate when the headlight stalk is clicked into high-beam position. Lights only come on when the stalk is held back in flash mode. The switch is integrated with the vehicle's computer system, complicating repair.
When: Intermittent occurrence during night driving
Symptoms owners cite: Clicking high beam control produces no headlight response; High beams activate only when stalk is held back in flash mode; Requires holding flash position to maintain high beam illumination
Repairs/costs cited: Mechanic assessment indicates switch is wired to computer; dealership service required, which is expensive and inconvenient for some owners
Turn signal bulb-out detection malfunction
The vehicle's computer system intermittently reports that turn signal bulbs are out and shuts off the entire front signal assembly, even when all bulbs are functioning properly. The system treats a single LED failure as total signal failure.
When: Intermittent during operation
Symptoms owners cite: Dashboard reports turn signal bulbs are out when they are not; Front turn signals shut off when computer registers false bulb-out; No way to signal turns when system triggers false failure
Headlight condensation
Moisture accumulates inside the headlight lens with no visible cracks or apparent water entry points.
When: Unspecified timing
Symptoms owners cite: Condensation visible inside headlight; No visible cracks or open water entry sources
Headlight lens deterioration from bulb heat
The headlight bulb produces sufficient heat to cause the lens itself to become foggy and deteriorate over time.
When: Progressive during operation
Symptoms owners cite: Headlight lens turns foggy; Lens deteriorates from bulb heat exposure
Illuminated dashboard creating false headlight-on impression
The instrument cluster remains illuminated even when headlights are off, creating a false impression that headlights are on. This differs from older vehicles where a dim dash indicated need to turn on lights. The problem encourages drivers to operate vehicles with insufficient or no lighting.
When: Ongoing design issue across multiple model years
Symptoms owners cite: Dashboard lit up with headlights off; False impression that headlights are on; Drivers operating vehicles with only fog lights or no lights due to false confidence; Increased frequency of vehicles on road with inadequate lighting
Synthesized from 12 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
Hi, I’ve noticed with this Jeep and the two newer cars before it would have my dash lit up when my headlights weren’t on. This is giving me and other drivers of these cars the false impression that my headlights must be on. So many folks are driving with either just fog lights or no lights at all because their dash is lit up. Before this technology your dash would be dim and that way you knew…
Had lighting trouble with your 2018 Jeep Grand Cherokee?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the lighting problem on the 2018 Jeep Grand Cherokee?
It's a documented issue but not catastrophic. 12 complaints have been filed. Repairs average $250 and most owners catch it before it causes a breakdown.
At what mileage does the lighting typically fail?
Based on the 12 complaints filed, lighting issues most often appear around 70,000 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $250 for lighting repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to lighting?
No active recalls currently cover lighting issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2018/Jeep/Grand Cherokee.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.