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Service bulletins for the 2023 Land Rover Defender

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

406 on file from NHTSA, as of 2026-10-19.

By type

By component

Bulletins, newest first
SSM76448 - 21APR262026-05-06. Other. UNKNOWN OR OTHER. Air Conditioning (AC) Inoperative.
D011 Defender 20MAR262026-04-07. Other. ENGINE. Engine coolant may leak from the coolant bypass hose assembly.
D006 Defender 20MAR262026-04-07. Other. UNKNOWN OR OTHER. The transfer case clutch and / or All Wheel Drive (AWD) lock cannot perform as designed.
TUCC_MAR2026_322026-04-07. Other. SUSPENSION. REAR DRIVELINE CLICK - NOISE
TUCC_MAR2026_312026-04-07. Other. SUSPENSION. REAR DRIVELINE CLICK - NOISE
TUCC_MAR2026_282026-04-07. Other. UNKNOWN OR OTHER. While driving with satellite maps, sometimes image doesn't load fully and then comes back
TUCC_MAR2026_272026-04-07. Other. UNKNOWN OR OTHER. INCONTROL REMOTE APP WAKE UP TIMER
TUCC_MAR2026_262026-04-07. Other. UNKNOWN OR OTHER. There are several scenarios where the key may be set to a deactivated state.
TUCC_MAR2026_182026-04-07. Other. ENGINE. Coolant may leak from the turbocharger coolant hose O-rings, resulting in engine coolant escaping into the engine compartment and subsequent illumination of the low coolant warning indicator on the instrument cluster. Replacement coolant hose O-rings are required.
SSM76411 - 10MAR262026-04-06. Other. ELECTRICAL SYSTEM. Smart Key Deactivated message on instrument cluster and unable to start their vehicle
SSM000028 - 18MAR262026-04-06. Other. UNKNOWN OR OTHER. Wireless Charger - Charging Interruption With iPhone 15 and 16 Devices
D061v2 - 20MAR262026-04-06. Service bulletin. ENGINE. Coolant may leak from the turbocharger coolant hose O-rings, resulting in engine coolant escaping into the engine compartment and subsequent illumination of the low coolant warning indicator on the instrument cluster.
Defender_N869 02-20-20262026-03-06. Other. UNKNOWN OR OTHER. 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.
Defender_D011 02-20-20262026-03-06. Other. ENGINE. Engine coolant may leak from the coolant bypass hose assembly. The leakage is in the form of a weep, but forms into a more substantial leak over time.
Defender_D006 02-20-20262026-03-06. Other. UNKNOWN OR OTHER. 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.
SSM76404 - 18FEB262026-03-04. Other. UNKNOWN OR OTHER. Driveline Noise Concerns
TUCC_FEB2026_422026-03-04. Other. STEERING. STEERING REQUIRES STEADY CORRECTION FORCE
TUCC_FEB2026_352026-03-04. Other. ELECTRICAL SYSTEM. There is a concern with the 48Volt charging system(DC/DC) with the vehicle.
TUCC_FEB2026_342026-03-04. Other. ELECTRICAL SYSTEM. There is a concern/fault with the 48Volt MHEV system.
TUCC_FEB2026_332026-03-04. Other. ELECTRICAL SYSTEM. 12V STARTUP BATTERY FLAT - MILD HYBRID ELECTRIC VEHICLE (MHEV)
D061 - 12FEB262026-03-04. Service bulletin. ENGINE. Turbocharger Coolant Feed / Return Leak
252602.027 - 12FEB262026-03-04. Service bulletin. ELECTRICAL SYSTEM. Once the vehicle is powered down via ignition cycle, it may not restart depending on remaining residual charge.
SSM000021-27JAN262026-02-06. Other. STEERING. Vehicle Requires Steady Correction Steering Force to Remain in Lane
TUCC_JAN2026_262026-02-06. Other. UNKNOWN OR OTHER. After vehicle off, the fan continues to run at high speeds.
TUCC_JAN2026_252026-02-06. Other. ELECTRICAL SYSTEM. There is a concern with the 48Volt charging system(DC/DC) with the vehicle.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.