Defender · L663 · 2020–present
Charging, starting, control modules and wiring for Land Rover models.
The Defender (L663) was sold with both fuel types. Diesel derivatives (D240 2.0 four-cylinder turbodiesel and D300 3.0 six-cylinder turbodiesel) use glow plugs, while petrol derivatives (P300 2.0 four-cylinder turbo petrol and P400 3.0 six-cylinder turbo petrol mild hybrid) use spark plugs and ignition coils.
Electrical parts also changed across the 2020–present production span, so give the model year with the VIN.
A recall published by the NCC in June 2026 covers selected Defenders sold from April 2019 to June 2026, where fretting corrosion at the airbag connector on the clockspring can stop the driver airbag deploying. Inspection and repair are free at dealers.
This is recall work, done free at Land Rover dealers. Check your VIN with a dealer before buying parts for it.
Modern Land Rovers are very sensitive to low voltage. A tired battery or poor earth connection can make several modules log faults at the same time. Test the battery and charging system, check the main earth points, then clear the codes and see which faults return.
A parasitic drain, where something stays on after the vehicle is locked, is the usual cause. Common culprits include a module that does not go to sleep, an aftermarket accessory, a faulty relay or an interior light switch. A workshop can measure the current drain and pull fuses one at a time to find it.
For how these parts work and the signs of wear, read the Land Rover electrical guide.
Share the VIN and engine number and the SparesBoyz parts team will check fitment before quoting.
