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April 17, 2026 Other

Engine coolant may leak from the coolant bypass hose assembly

Land Rover technical service bulletin D011 Defender 17APR26 for 2023 Land Rover Defender.

Bulletin number
D011 Defender 17APR26
Component
Engine
Summary
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.

Owners of these vehicles have filed 15 complaints in the engine category.

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