2021 Land Rover Defender Technical Service Bulletins

514 technical service bulletins (TSBs) are on record for the 2021 Land Rover Defender. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 11038293Sep 25, 2026Body and structure. Accessory Wheel Arch Protection - Gaps Present Between Protection And Vehicle Body
• 11037119Aug 21, 2026Other or unknown. TCU Activation Failure And InControl App Inoperative After Software Update
• 11037117Aug 21, 2026Other or unknown. Air Conditioning Inoperative / Intermittent Operation
• 11035735Jul 22, 2026Other or unknown. Intermittent Passive Entry Operation 24MY Or With New Service Smart Key Fob.
• 11035675Jul 20, 2026Other or unknown. Exhaust System Oxygen (O2) Sensors - Extended Warranty
• 11035679Jul 6, 2026Other or unknown. A low-speed ‘clonk’ type noise from the rear driveline, audible during low speed throttle inputs, often coupled with up/down gear changes. The noise is audible during normal road driving conditions.
• 11034885Jun 16, 2026Other or unknown. Software Over The Air (SOTA) updates are failing to complete. Specifically Vehicle Domain Controller (VDC) PIVI and Gateway Module A (GWM). These vehicles have now been stopped from further SOTA attempts and require a wired intervention.
• 11033424May 16, 2026Other or unknown. Software Over The Air (SOTA) updates are failing to complete. Specifically Vehicle Domain Controller (VDC) PIVI and Gateway Module A (GWM). These vehicles have now been stopped from further SOTA attempts and require a wired intervention.
• 11033398May 16, 2026Electrical system. Door Zone Module - Quiescent Drain
• 11033277May 15, 2026Other or unknown. The transfer case clutch and / or All Wheel Drive (AWD) lock cannot perform as designed. This may show as a reduction in torque to the front axle during driving or as an inability to apply the AWD lock.
• 11033241May 1, 2026Engine. Arduous customer drive cycles have been found to accelerate the degradation of engine oil, leading to generation of engine oil sludge deposits in high pressure engine oil galleries of the engine and inside the Continuous Variable Valve Lift (CVVL) unit.
• 11032359Apr 21, 2026Other or unknown. Air Conditioning (AC) Inoperative.
• 11032424Apr 17, 2026Other or unknown. Software Over The Air (SOTA) updates are failing to complete
• 11032421Apr 17, 2026Electrical system. Door Zone Module - Quiescent Drain
• 11032373Apr 17, 2026Other or unknown. The transfer case clutch and / or All Wheel Drive (AWD) lock cannot perform as designed. This may show as a reduction in torque to the front axle during driving or as an inability to apply the AWD lock.
• 11031092Mar 20, 2026Electrical system. Door Zone Module - Quiescent Drain
• 11031070Mar 20, 2026Other or unknown. The transfer case clutch and / or All Wheel Drive (AWD) lock cannot perform as designed.
• 11030743Mar 18, 2026Other or unknown. Wireless Charger - Charging Interruption With iPhone 15 and 16 Devices
• 11030964Mar 13, 2026Other or unknown. While driving with satellite maps, sometimes image doesn't load fully and then comes back
• 11030963Mar 13, 2026Other or unknown. Incontrol remote app wake up timer
• 11030962Mar 13, 2026Other or unknown. There are several scenarios where the key may be set to a deactivated state.
• 11030751Mar 10, 2026Electrical system. Smart Key Deactivated message on instrument cluster and unable to start their vehicle
• 11029851Feb 20, 2026Other or unknown. Software Over The Air (SOTA) updates are failing to complete. Specifically Vehicle Domain Controller (VDC) PIVI and Gateway Module A (GWM). These vehicles have now been stopped from further SOTA attempts and require a wired intervention.
• 11029848Feb 20, 2026Engine. Door Zone Module - Quiescent Drain
• 11029843Feb 20, 2026Other or unknown. The transfer case clutch and / or All Wheel Drive (AWD) lock cannot perform as designed. This may show as a reduction in torque to the front axle during driving or as an inability to apply the AWD lock.
• 11029603Feb 13, 2026Steering. Steering requires steady correction force
• 11029600Feb 13, 2026Electrical system. There is a concern with the 48Volt charging system(DC/DC) with the vehicle.
• 11029598Feb 13, 2026Electrical system. There is a concern/fault with the 48Volt MHEV system.
• 11029576Feb 13, 2026Electrical system. 12v startup battery flat - mild hybrid electric vehicle (mhev)
• 11029556Feb 12, 2026Electrical system. Once the vehicle is powered down via ignition cycle, it may not restart depending on remaining residual charge.
• 11028602Jan 28, 2026Other or unknown. After vehicle off, the fan continues to run at high speeds.
• 11028601Jan 28, 2026Electrical system. There is a concern with the 48Volt charging system(DC/DC) with the vehicle.
• 11028600Jan 28, 2026Other or unknown. Pivi wireless carplay / android auto connectivity
• 11028608Jan 27, 2026Steering. Vehicle Requires Steady Correction Steering Force to Remain in Lane
• 11027539Dec 20, 2025Engine. Coolant fan may continue running at high speed after ignition shut-off
• 11027546Dec 19, 2025Other or unknown. PIVI - Unable to log into InControl account in vehicle
• 11027472Dec 12, 2025Electrical system. A battery warning light on and or electrical system failure message is displayed on instrument cluster.
• 11027470Dec 12, 2025Other or unknown. Vehicles may exhibit PIVI Login concerns even with InControl Remote functions operating.
• 11027468Dec 12, 2025Other or unknown. Passive entry intermittent operation
• 11027464Dec 12, 2025Other or unknown. Body / hmi can functions reset every 8-10 minutes
• 11027515Dec 10, 2025Other or unknown. Unable to Log into InControl Account in Vehicle.
• 11027510Dec 1, 2025Other or unknown. RESCINDED - Rear Doors Difficult To Open - RESCINDED
• 11024649Oct 17, 2025Other or unknown. Software Updates
• 11024480Oct 17, 2025Other or unknown. Near Field Sensing Module (NFSM) Wired Updates
• 11024478Oct 17, 2025Electrical system. Door Zone Module - Quiescent Drain
• 11024473Oct 17, 2025Other or unknown. The transfer case clutch and / or All Wheel Drive (AWD) lock cannot perform as designed. This may show as a reduction in torque to the front axle during driving or as an inability to apply the AWD lock.
• 11022436Aug 29, 2025Other or unknown. Body and Comfort (HMI) CAN related functions such as window switches or air conditioning may reset or become inoperable every 8-10 minutes while driving.
• 11022591Aug 18, 2025Other or unknown. Software Over The Air (SOTA) updates are failing to complete. These vehicles have now been stopped from further SOTA attempts and require a wired intervention.
• 11022586Aug 18, 2025Other or unknown. Near Field Sensing Module (NFSM) Wired Updates
• 11022582Aug 18, 2025Other or unknown. Door Zone Module - Quiescent Drain

← All problems reported for the 2021 Land Rover Defender