B1A36 on 2022-2025 Jeep Grand Cherokee (Limited, Overland, Summit, Summit Reserve) — Manufacturer-Specific Body/Security System Code
1 vehicles · 1 makes · $200-$1,400 repair
How to diagnose and fix B1A36: most-reported vehicles
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Jeep Grand Cherokee · 2022–2025
Owners have reported the hands-free/power liftgate on the WL Grand Cherokee opening unexpectedly, reversing while closing, beeping without completing the cycle, or failing to latch. Reports point to latch alignment issues, pinch-sensor calibration problems, weak struts, or software/body control faults. While not usually catastrophic, it is a recurring nuisance and can create injury risk or battery drain if the gate remains ajar.
Common Symptoms
- liftgate beeps but does not close
- liftgate reverses while closing
- rear hatch says open when shut
- hands-free liftgate works intermittently
- battery drain from hatch not fully latched
How to Fix
Check for stored body/liftgate module faults, verify latch alignment and striker position, inspect pinch sensors and wiring in the hinge area, and test strut force. Dealers often address this with software updates, latch adjustment, sensor replacement, or liftgate module relearn procedures. If the gate bounces back or will not latch, avoid forcing it repeatedly because that can damage the cinch motor.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Genuine Mopar 68364385AE power-liftgate latchOEMMopar 68364385AE
Power-liftgate latch/cinch replacement after switch and mechanical testing confirms failure Fitment/availability: The exact catalog identifies 68364385AE as the with-power-liftgate latch for specified 2022 applications. Confirm VIN and W…
- Genuine Mopar 68342104AA driver-side power-liftgate support strutOEMMopar 68342104AA
Driver-side support replacement after measured weakness, leakage or binding is confirmed Fitment/availability: 2022-2025 Grand Cherokee with power liftgate, driver side. Confirm VIN and installed power-liftgate hardware; it is not the pa…
- Genuine Mopar 68371475AC passenger-side power-liftgate support strutOEMMopar 68371475AC
Passenger-side support replacement after measured weakness, leakage or binding is confirmed Fitment/availability: 2022-2025 Grand Cherokee with power liftgate, passenger side. Confirm VIN and installed hardware; it is not the driver supp…
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Owner tips & cautions
- TipClean the latch and striker area and verify no cargo mat or weatherstrip interference before assuming a module failure.
- TipOwners recommend performing the power liftgate height/memory relearn after battery replacement or low-voltage events.
Sources for this issue (1)
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B1A36 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does B1A36 mean?
B1A36 stands for "Manufacturer-Specific Body/Security System Code." B1A36 is a manufacturer-specific body code that falls within the security-systems range and does not have a single standardized SAE definition. On vehicles that use this range (notably Chrysler/Stellantis and Mitsubishi) the B1A3x codes generally relate to immobilizer, key/transponder, or security-module communication faults. Without confirmation from make-specific service data the exact meaning cannot be stated. Have it read with a brand-specific scan tool to pin down the precise definition.
What are the most common causes of B1A36?
The most common causes of B1A36 are: Key/transponder not recognized or not programmed, Immobilizer or security module communication fault, Faulty antenna ring or related wiring, Connector corrosion or open circuit in the security system, Module configuration or software issue, Faulty body control / immobilizer module. The specific cause varies by vehicle.
How much does it cost to fix B1A36?
Repair costs for B1A36 range from $200 to $1,400, depending on the vehicle and root cause.
Which vehicles are affected by B1A36?
Au7o has documented B1A36 across 1 vehicle models from 1 manufacturers: Jeep.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.