While driving locally on a city street, heard a low whining sound, followed by the dashboard battery warning light being illuminated. Sound increased and decreased with vehicle speed. Drove immediately home, less than a mile, parked the vehicle, opened the hood and isolated the location of the whining sound to the alternator area. At this time I could also smell a burning odor (being an…
2012 Jeep Grand Cherokee electrical problems
severe 774 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Failure mileage
Complaints
774
Recalls
0
Avg fix
$850
2crashes
93fires
2injuries
When does it fail?
Of the 774 electrical complaints filed for the 2012 Jeep Grand Cherokee, here's the actual mileage breakdown — failures cluster heaviest at 25,000-50,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Electrical accounts for 47% of every owner complaint on file for this vehicle — the dominant problem area across 12 categories tracked.
Owners have filed 774 electrical complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
The failure pattern owners describe
Buyer takeaway: The 2012 Jeep Grand Cherokee has widespread electrical issues that dealers struggle to diagnose, including intermittent stalling, alternator fires, and sudden power loss—some recurring even after recall service. Multiple owners spent thousands on repairs, and Chrysler has excluded many vehicles from recall coverage despite identical symptoms to recalled models.
Owners describe intermittent stalling, difficulty starting, and complete electrical shutdown while driving—often without warning lights until the failure occurs. Many report the engine dying at traffic lights or during turns, then restarting after turning the ignition off and back on. Several owners pushed vehicles back into service after recall work only to experience these same issues immediately after. Starting problems frequently recur even after dealer diagnosis and parts replacement; one owner returned multiple times over two years with no resolution.
Alternators have failed catastrophically in multiple accounts, producing smoke and burning odors. Some owners report the 180-amp and 220-amp alternators failing identically to the recalled 160-amp version, yet their vehicles were excluded from recall coverage. When alternators fail, secondary damage to batteries and engine control modules often follows, multiplying repair costs.
Headliner and sun-visor fires are reported both before and after recall service, with one owner's vehicle catching fire just four months following the P36 recall repair. Another fire occurred after recall work on the same sun-visor wiring, suggesting the repair did not resolve the underlying electrical fault.
Owners consistently report dealers unable to reproduce intermittent failures during diagnostic testing, then refusing further investigation. Many were told "no error codes found" or placed on parts-shortage waiting lists for months. Several owners paid out-of-pocket for repairs later matching recalled issues, then were denied reimbursement because their VINs supposedly fell outside recall ranges.
Same Jeep Grand Cherokee electrical reports on nearby years: 2009 · 2010 · 2011 · 2013 · 2014
Failure modes owners describe
Intermittent stalling and hard starting
Engine dies suddenly while driving or fails to start on first attempt; vehicle may restart after turning ignition off and back on. Typically no warning lights precede failure. Occurs multiple times over months or years, often within 10 minutes of leaving home, and remains undiagnosed by dealers.
When: 60,000 miles and above; some owners report onset at 25,000–35,000 miles. Failures span from 2013 through 2017 model years in service.
Symptoms owners cite: Engine stalls without warning while driving at any speed (city streets to expressway); Sudden loss of power steering and power brakes when stalling occurs; Difficulty starting; vehicle may require multiple ignition cycles to start; Starting in Neutral only after stalling; Vehicle cranks but does not turn over; sputtering, shaking before eventual start; Intermittent nature makes diagnosis difficult; does not replicate in dealer service
Codes mentioned: TIPM suspected (Totally Integrated Power Module) by multiple owners; not confirmed by dealers, No stored diagnostic trouble codes retrieved during dealer diagnostics
Repairs/costs cited: Two owners mention TIPM replacement recommended or performed; one owner cites $1,200–$1,400 dealer cost. Fuel pump relay recall performed on several vehicles without resolving stalling. One owner paid $650 for fuel pump relay replacement claimed not covered by earlier recall. One dealership replaced ignition switch (IG 08053059) without resolving issue. Some owners cite transmission concerns after recall service but no confirmed repair cost given.
Recalls/TSBs owners mention: Fuel pump relay recall (P59/NHTSA 14V-391 or similar). Dealers claim inability to replicate problem and refuse further diagnosis. Chrysler case managers assigned but offered no solutions short of accident occurrence. One owner reports Stellantis refused STAR (Safety Recall Audit Trail) escalation. Multiple owners state dealers performed recalls but problems persisted.
Alternator failure with fire risk
Alternator fails suddenly, producing smoke and burning odor; in several cases, escalates to flames. Failures often occur at low speeds or while parked. Secondary electrical damage to battery and engine control module (PCM) common. Some owners report 180-amp and 220-amp alternators failing identically to recalled 160-amp units but excluded from recall coverage.
When: Mostly 2014–2017 in service; one fire event occurred four months after P36 recall service in 2015. One owner reports failure at 42,000 miles after initial purchase, another during a 190-mile trip with no prior warning.
Symptoms owners cite: Battery warning light illuminates; Audible whining or squealing from alternator; Smoke and burning smell from under hood, concentrated around alternator area; Visible flames or charring around alternator; Vehicle stalls after alternator failure; complete loss of electrical power; Accelerated burning odor in cabin after failure; Sparks observed near alternator area
Codes mentioned: P60 recall applies to 160-amp alternators only (per manufacturer); 180-amp and 220-amp failures reported but excluded, T36 recall (NHTSA 17V-435) for alternator diode thermal fatigue applies to some vehicles; others told VIN excluded despite identical symptoms
Repairs/costs cited: Alternator replacement cost $500–$2,900 depending on secondary damage. One owner paid $1,500 for alternator; subsequent electrical repairs cost $3,000. Battery replacement $150–$300. PCM/engine control module replacement $1,000–$2,900 when damaged by alternator short. One owner cites $800 starter repair later determined unnecessary; technician error in diagnosis. One dealership installed alternator improperly: ground wire not connected to engine, charge wire in incorrect position, protective cover could not be placed. Warranty denied on out-of-pocket repairs when VIN not included in recall.
Recalls/TSBs owners mention: Recall P60 for 160-amp alternator (NHTSA 14V-634000); Recall T36 for alternator diode thermal fatigue (NHTSA 17V-435). Multiple owners report being told parts unavailable for months, then assigned case numbers with no follow-up. One owner waited on parts since September 2014 and was told Chrysler sends one part per week to dealers, causing months-long delays. Owners report Chrysler warranty reps acknowledging increased complaint volume but refusing to extend recall to non-specified amperage alternators or reimburse out-of-pocket repairs. One customer sales rep promised reimbursement for secondary PCM damage, but subsequent rep denied claim.
Electrical system shutdown under load
Complete loss of electrical power while driving, disabling power steering, power brakes, and engine control. Typically follows battery or alternator warning light. Vehicle loses all instrument panel lighting, wipers, and climate controls. Some owners report sequential failures: battery light, then multiple warning lights, then total shutdown.
When: During normal highway or city driving at various speeds; one event at 40–45 mph, another during expressway travel. Occurs in vehicles with 60,000–125,000 miles.
Symptoms owners cite: Battery warning light illuminates initially; Sequential illumination of multiple warning lights (check engine, ABS, airbag, brake, service 4WD, electronic stability control); Instrument cluster goes dark or flashes erratically; Wipers, radio, HVAC controls cycle on/off erratically; Complete engine shutdown; loss of all electrical power; Power steering locks; power brakes become inoperative; Vehicle cannot coast safely; steering extremely difficult; No warning before total failure (some reports indicate no alert lights until failure in progress)
Codes mentioned: NHTSA Campaign 14V634000 (Electrical System), NHTSA Campaign 19V813000 (Electrical System), PCM/engine control module failure codes may appear post-failure; pre-failure diagnostics often show no codes
Repairs/costs cited: Repair costs $1,500–$4,000+ when alternator, battery, and PCM all damaged. One owner paid $2,900 for alternator, battery, and computer repair. Another $1,600 for alternator, battery, and PCM. Dealers often attempt diagnosis via software update (cost ~$75) without resolving issue. One owner paid $650 for fuel pump relay service and $75 software update with no resolution.
Recalls/TSBs owners mention: Recalls 14V634000, 19V813000, and others assigned but parts frequently unavailable. Owners report Chrysler customer service providing no estimated repair timeline. Multiple owners state case managers assigned who then refuse further assistance unless accident occurs. One owner was explicitly told by case manager to 'contact him when you have an accident and he will take the case to the next level.' Dealers claim inability to replicate intermittent failures and refuse monitoring devices.
Headliner and sun-visor electrical fires
Fires originating in headliner wiring or sun-visor lamp assembly while vehicle is stationary or shortly after use. Some fires occurred months after P36 recall service designed to address this issue. Fire spreads rapidly from wiring behind windshield or visor area; difficult for fire department to access battery under front passenger seat.
When: P36 recall fires reported in 2014–2015 even after recall service completed. One fire four months post-P36 repair. Another fire in driveway shortly after 15-minute drive. One fire while in garage after 190-mile trip with no prior symptoms.
Symptoms owners cite: Smoke from headliner area above windshield or from sun-visor area; Noxious fumes and electrical smell preceding flames; Flames erupting from wiring above driver or passenger side window; Fire spreads toward passenger-side visor; Flames continue for 10–15 minutes despite water applied; Smoke visible when vehicle is first approached after parking; No warning lights or prior indication before smoke/fire begins
Codes mentioned: P36 recall (NHTSA 14V-391 or 14V391000) for sun-visor wiring and vanity lamp assembly. Updated P36 recall issued December 2014 specifically for vehicles that had already received original P36 service, indicating first repair was ineffective.
Repairs/costs cited: Fires extinguished by owner with water hose or by fire department; vehicle towed after. Fire damage extensive, requiring professional investigation and repair. One owner reported dealership service was documented but fire still occurred. Firefighters had to cut headliner and wiring to stop fire. Cost of full electrical system replacement and damage repair not quantified in narratives.
Recalls/TSBs owners mention: P36 recall issued for sun-visor wiring (NHTSA 14V-391). Dealerships performed original recall service on at least two vehicles before fires occurred. Updated recall issued December 2014 specifically addressing vehicles that received original P36 service, confirming inadequate repair. One owner reported to Chrysler and investigator submitted report, but case moved to legal department with no customer communication for month. Multiple calls to recall center (8+ times) resulted in promises of callback within 2–3 days that never materialized. Chrysler provided no temporary housing or rental car assistance during investigation.
Post-recall service failures
Vehicles experienced electrical and fuel system failures immediately or shortly after completing fuel pump relay recall, sun-visor recall, or alternator recall service. One dealership improperly installed replacement alternator with incorrect wiring. Another vehicle developed transmission concerns after recall service. Dealers claim recall work completed but problems persist, suggesting inadequate repair or technician error.
When: Within hours to weeks of recall service completion. One owner reported check engine light appearing less than 24 hours after fuel pump relay recall. Another vehicle experienced stalling one month after fuel pump relay recall. One alternator installation in 2017 had multiple wiring errors.
Symptoms owners cite: Check engine light illuminates within 24 hours of recall service; Service 4WD, traction control, and other warning lights appear intermittently post-service; Overheating begins after previously trouble-free operation; Vehicle stalls or hard starts despite recall claimed completed; Transmission concerns identified after fuel pump relay recall; Vehicle begins experiencing same issues as pre-recall symptoms
Codes mentioned: Check engine light (no specific code given), Service 4WD warning, Traction control warning
Repairs/costs cited: One alternator installation documented with ground wire not connected to engine, charge wire in incorrect position, protective cover unable to be placed, and alternator not charging while overheating. Cost $189 for incorrect diagnosis, later $800 for proper alternator repair (improperly installed unit later confirmed faulty). Owner demanded warranty work; service manager refused and allegedly threatened violence. One fuel pump relay recall service was allegedly not performed despite documentation; owner paid $650 out-of-pocket for replacement after software update failed.
Recalls/TSBs owners mention: Fuel pump relay recall and alternator recalls marked complete by dealerships. One dealership (Jeep of Concord) performed recall and inspection was documented as successful, but issues emerged immediately after. Stellantis refused STAR (Safety Recall Audit Trail) escalation despite request. Napleton Jeep Kissimmee diagnosed starter as failed (charged $189 diagnostic fee), then owner obtained second opinion showing alternator was improperly installed; dealership service manager refused refund and further warranty work.
Headlight assembly communication loss and malfunction
Right and left headlight assemblies lose communication with body control module. Low-beam lighting drops to unsafe levels (~10 feet ahead). Both low beam and high beam provide insufficient illumination. In-dash message indicates 'computer module lost communication' with headlight. Estimated replacement cost ~$3,000.
When: Failure noted in one 2012 with unknown mileage; communication loss messages appeared a month apart (right, then left).
Symptoms owners cite: Low-beam light casts only ~10 feet ahead of vehicle; High-beam minimal improvement over low beam; Headlights do not illuminate license plate of vehicle 10 feet ahead; In-dash message: 'Computer module lost communication with right headlamp assembly'; Approximately one month later, similar message for left headlamp assembly; Unsafe for night driving on unlit roads
Codes mentioned: Computer module communication loss (no specific DTC provided)
Repairs/costs cited: Jeep dealer estimated ~$3,000 for headlight assembly replacement; owner did not proceed with repair.
Recalls/TSBs owners mention: None documented in narrative. Owner requested NHTSA investigation and manufacturer recall but no response documented.
Brake booster corrosion and delayed recall service
Brake booster may prematurely corrode and ingest water. Recall P14 (NHTSA 14V-154) issued for water shield inspection. In cold climates, frozen water may increase pedal force required, delaying brake response. Owners report extended waiting periods (months) for recall parts due to manufacturer rationing. One owner waited on a queue of 124 customers for single parts arriving one at a time.
When: Recall notice issued August 2014; by December 2014, parts still unavailable with no timeline. Owners waiting 3–4 months or longer for parts without manufacturer communication.
Symptoms owners cite: Loss of brake functionality without warning (one owner reported while driving at low speed); Potential for water ingestion and corrosion of brake booster internals; Risk of frozen water increasing pedal force and slowing brake response in winter conditions
Codes mentioned: P14 recall / NHTSA 14V-154 (Brake Booster Corrosion)
Repairs/costs cited: Brake booster water shield inspection or replacement; parts unavailable at dealer level for months. One owner told dealer was at position 40 on waiting list when another customer was at position 124; Chrysler sends one part at a time.
Recalls/TSBs owners mention: P14 recall (NHTSA 14V-154) issued for brake booster water shield. Multiple owners report parts on backorder with no estimated delivery date. Dealers placed customers on waiting lists. Chrysler rationed parts, sending one unit per week or less. Manufacturer did not provide clear timeline or temporary remedy. Service managers acknowledged the dangerous condition but could not offer resolution.
Electrical system failures cascading to secondary component damage
Primary electrical failures (alternator or battery) cause secondary damage to battery, powertrain control module (PCM), and other components. One owner was told by Chrysler warranty rep that powertrain module damage would be covered if caused by alternator failure, but later denied claim pending receipt of alternator part.
When: Failures occurring 2014–2017 in service. One cascading failure in 2014, another in 2017.
Symptoms owners cite: Alternator short-circuit disables battery and PCM simultaneously; Starter relay fuse blows after alternator failure; Vehicle unable to hold programming after PCM replacement; key fob not recognized; Secondary electrical failures (seat heaters, passenger-side heat, driver-seat movement function) appear weeks or months after primary repair
Codes mentioned: No specific codes provided; failures diagnosed post-event
Repairs/costs cited: Alternator replacement $500–$1,500. Battery replacement $150–$250. PCM replacement and reprogramming $1,000–$2,900. Total cascading repair costs $1,600–$4,600. One owner paid for alternator out-of-pocket and was promised reimbursement for secondary PCM damage by Chrysler warranty rep, but claim later denied by different rep citing lack of alternator part receipt.
Recalls/TSBs owners mention: Chrysler customer care assigned case managers; one rep confirmed secondary PCM damage would be covered if caused by alternator failure, but subsequent communication denied claim pending receipt of alternator recall part. No escalation path offered when warranty reps contradicted each other.
Intermittent electrical system cycling and component failure
Electrical system malfunctions with spontaneous cycling of multiple functions: wipers turning on/off, mirrors opening/closing, seat position changing, lights dimming and brightening, warning lights flashing. Some events occur only while driving. In one case, replacement of clock spring and TIPM resolved issue after two months in shop.
When: Event reported summer 2023 in one case; other events not specifically dated. Failures occur during active driving.
Symptoms owners cite: Windshield wipers cycle on/off without driver input; All dashboard warning lights illuminate: brake, check engine, airbag, ABS, service park assist, service power steering; Dashboard messages flash repeatedly: 'service park assist,' 'service power steering'; Right and left side mirrors open/close spontaneously while driving; Driver seat moves forward/backward randomly; Headlights dim and brighten without control; Speedometer and tachometer needles move erratically; Vehicle jerks hard during gear shifts; appears stuck in high gear; Difficulty accelerating or moving after stopping at lights
Codes mentioned: Clock spring failure (replaced), TIPM failure (Totally Integrated Power Module) replaced
Repairs/costs cited: Two-month shop stay for diagnosis and repair. Clock spring and TIPM replaced; costs not specified but owner noted as 'costly repair.' Owner joined Jeep Grand Cherokee Facebook group and found this issue 'pretty common' in 2012 Grand Cherokees.
Recalls/TSBs owners mention: None documented; vehicle repaired at independent shop.
Synthesized from 774 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 7 most recent
My power door locks stopped working. I made an appointment to have it repaired and the day I was going to drive my jgc to the dealer, all hell broke loose. Park assist stopped working, anti skid and 4 wheel drive also indicated errors. But worse, I could not move the shifting arm out of park. I had to have it dragged out of my garage by a local towing service. The dealer said it was a faulty…
Tl* the contact owns a 2012 Jeep grand cherokee. While operating the vehicle, the battery sensor light suddenly illuminated for approximately ten minutes before the vehicle suddenly shut off while driving through an intersection. The cause of the failure was not diagnosed or repaired. The manufacturer was not notified. The failure mileage was 75,000.
I did not have an actual incident with the vehicle - my complaint is about the lack of action for certain recalls. I received a recall notice on august 22, 2014 stating that the brake booster on my vehicle may prematurely corrode and ingest water. If the water freezes, the driver may have to apply force which may slow the driver's brake reaction time and cause a crash without warning. Quite a…
Tl* the contact owns a 2012 Jeep grand cherokee. The contact received notification of NHTSA campaign number: 15v115000 (electrical system); however, the part to repair the vehicle was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts…
Tl* the contact owns a 2012 Jeep grand cherokee. The contact received notification of NHTSA campaign number: 19v813000 (electrical system) however, the part to do the recall repair was unavailable. The contact called ramsey Chrysler Jeep Dodge Ram (1555 nj-17, ramsey, nj 07446: (201) 818-9600) and Chrysler Dodge Jeep of paramus (315 nj-4, paramus, nj 07652: (201) 488-9000) where it was confirmed…
Vehicle was in motion when I noticed smoke coming out of the passenger vanity mirror area. I immediately pulled over, turned the car off, and called 911. The responding firemen had to cut a hole in the roofliner of the automobile in order to determine the location of the start of the fire, which they confirmed was the wiring to the visor. The direct cause of the fire was confirmed by service…
Had electrical trouble with your 2012 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 electrical problem on the 2012 Jeep Grand Cherokee?
It's a meaningful issue. 774 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Across the 445 complaints that reported odometer mileage, most electrical failures cluster between 45,000 and 97,000 miles, with the median around 72,000. A quarter of owners report trouble before 45,000; a quarter make it past 97,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $850 for electrical 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 electrical?
No active recalls currently cover electrical 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/2012/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.