2003–2004 Land Rover Discovery 2 (L318)
Browse our directory of 2003–2004 Land Rover Discovery 2 (L318) vehicles. Access instant MOT history reports, tax status, and reliability insights for any registration listed below.
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Common Problems & Reliability
The 2003–2004 Land Rover Discovery 2 (L318) has 3 known issues. 2 of these are classified as serious faults that could be expensive to repair. 1 are moderate concerns worth inspecting before purchase.
TD5 Injector Harness Oil Migration
SeriousOil seeps along the injector wiring harness into the ECU red plug connector, causing rough running, misfires and potential ECU damage.
Symptoms: Rough idle, Misfires...
Est. repair cost: £100–£500
Air Suspension and ACE System Failures
SeriousSelf-levelling suspension (SLS) air bags perish and compressors fail. The ACE system leaks from corroded pipes, causing handling issues and expensive repairs.
Symptoms: Vehicle sagging, ACE warning light...
Est. repair cost: £400–£2,000
Three Amigos (ABS/TC/ HDC Warnings)
ModerateThe ABS, Traction Control, and Hill Descent Control warning lights illuminate together. Usually caused by ABS sensor failures but can indicate more expensive 4WD system issues.
Symptoms: Three warning lights on together, Loss of traction control...
Est. repair cost: £100–£800
Buying Tips for the 2003–2004 Land Rover Discovery 2 (L318)
- ✓On TD5 models, check for oil in the injector wiring loom - a very common and cheap fix if caught early
- ✓The head gasket is a known failure on early TD5s with plastic dowels; look for metal dowel replacements
- ✓ACE (Active Cornering Enhancement) pipes leak and are expensive; some owners delete the system entirely
- ✓Check the chassis carefully for rot, especially around towbar mounting points
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