Question 1

What is Air Suspension Bag Leaks on the Land Rover Range Rover Mk4 (L405)?

Accepted Answer

The rubber air bags perish or crack, causing the car to sag and the compressor to overwork.

Question 2

What is 3.0 Diesel Crankshaft Failure on the Land Rover Range Rover Mk4 (L405)?

Accepted Answer

Catastrophic crankshaft or bearing failure, often occurring without warning.

Question 3

What is Front Suspension Lower Arm Wear on the Land Rover Range Rover Mk4 (L405)?

Accepted Answer

Front lower control arm bushes wear quickly due to the vehicle weight, causing clonking noises and uneven tyre wear. Budget £700 to replace all arms at once.

Question 4

What is Electrical Gremlins and Module Failures on the Land Rover Range Rover Mk4 (L405)?

Accepted Answer

Pre-2015 cars in particular suffer from intermittent electrical faults including window switches, dashboard glitches, faulty fuel gauges, and random module failures. Water ingress and poor battery condition exacerbate these issues.

Question 5

What should I check when buying a used Land Rover Range Rover Mk4 (L405)?

Accepted Answer

The 4.4 SDV8 is the more robust diesel choice; the 3.0 TDV6/SDV6 has a higher crankshaft failure risk.

Question 6

What should I check when buying a used Land Rover Range Rover Mk4 (L405)?

Accepted Answer

Check air suspension rises and falls smoothly; bags typically last 7-10 years before perishing.

Question 7

What should I check when buying a used Land Rover Range Rover Mk4 (L405)?

Accepted Answer

Verify security upgrades; L405s are high theft targets in the UK - look for Ghost immobilisers or S5 trackers.

Question 8

What years was the Land Rover Range Rover Mk4 (L405) made?

Accepted Answer

The Land Rover Range Rover Mk4 (L405) was produced from 2012 to 2022.

Land Rover Range Rover Mk4 (L405)

Range Rover Mk4 (L405) Reliability & Common Faults

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