Land Rover2012–2017

Discovery 4 Discovery 3.0 SDV6 256 hp: Common faults & known problems

Common faults & known problems

9 known faults documented in workshop bulletins. Of these, three concern the engine and fuel system and one the electrical and ignition. Symptoms, causes, repair steps and part numbers are shown where supplied.

Updated Technical specifications

Engine & fuel system

3 documented faults — symptoms, causes and workshop fixes.

Poor engine performance

Overview

Affects
All models with 3.0 Diesel engine, 2010→.
Remedy
Fit new part
Parts
2 parts

Cause

Intake manifold split or cracked.

Repair

  1. Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
  2. If no fault(s) found: Fit new intake manifold(s) as necessary.
Parts2 parts
Parts listed in the bulletin
PartPart numberQty
Intake manifold (LH)LR0735851
Intake manifold (RH)LR0746231

Data: Motorwise Workshop. Bulletin 2.

Lack of power when accelerating

Overview

Affects
All models with 3.0 Diesel engine.
Remedy
Fit new part
Parts
1 part

Cause

Turbocharger (TC) intercooler outlet hose chafed through on intake air pipe.

Repair

  1. Fit new TC intercooler outlet hose.
  2. Ensure suitable clearance between TC intercooler outlet hose and intake air pipe.
Parts1 part
Parts listed in the bulletin
PartPart numberQty
TC intercooler hoseLR0710441

Data: Motorwise Workshop. Bulletin 3.

Lack of power. Trouble code stored in engine control module (ECM) fault memory: P2452

Overview

Affects
All models with 3.0 Diesel engine, VIN DA652215-DA699715.
Fault codes
P2452
Remedy
Software update

Cause

Engine control module (ECM) software fault.

Repair

  1. Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
  2. If no fault(s) found: Re-program ECM with upgraded software. Note: To carry out an effective repair a software upgrade will be required - refer to manufacturer.

Data: Motorwise Workshop. Bulletin 5.

Electrical & ignition

1 documented fault — symptoms, causes and workshop fixes.

Intermittent self-activation of alarm system siren

Affects All models.Fit new part

Symptoms

Audible warning sounds when locking vehicle. Bonnet open warning message displayed in instrument panel.

Cause

Bonnet switch faulty.

Repair

  1. Fit new bonnet switch. Bonnet switch integral to bonnet latch.
Parts1 part
Parts listed in the bulletin
PartPart numberQty
Bonnet switchLR0543311

Data: Motorwise Workshop. Bulletin 1.

Suspension & drivetrain

1 documented fault — symptoms, causes and workshop fixes.

Knocking noise from front suspension when driving over uneven surfaces

Overview

Affects
All models.
Parts
1 part

Symptoms

Knocking noise from front suspension when braking at low speed.

Cause

Excessive play in front suspension lower arm rear bush.

Repair

  1. Replace front suspension lower arm rear bush on both sides.
  2. Check front wheel alignment and adjust if necessary.
Parts1 part
Parts listed in the bulletin
PartPart numberQty
Suspension lower arm rear bushLR0674942

Data: Motorwise Workshop. Bulletin 6.

Steering

1 documented fault — symptoms, causes and workshop fixes.

Steering heavy

Affects All models.Fit new part

Symptoms

Noise from steering column when driving over uneven surfaces or when manoeuvring or parking.

Cause

Water ingress into steering column lower universal joint causing corrosion.

Repair

  1. Fit new steering column lower shaft.
Parts2 parts
Parts listed in the bulletin
PartPart numberQty
Steering column lower shaft - RHDLR0711461
Steering column lower shaft - LHDLR0711471

Data: Motorwise Workshop. Bulletin 7.

Clutch & gearbox

1 documented fault — symptoms, causes and workshop fixes.

Warning message 'Transmission Fault' displayed in instrument panel

Overview

Affects
All models with 8HP70 transmission code, 2014-16.
Fault codes
P0780
Remedy
Software update

Symptoms

Transmission control module (TCM) in limp home mode. Trouble code stored: P0780.

Cause

Transmission control module (TCM) software fault.

Repair

  1. Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
  2. If no fault(s) found: Re-program transmission control module (TCM) with upgraded software. Note: To carry out an effective repair a software upgrade will be required - refer to manufacturer.

Data: Motorwise Workshop. Bulletin 4.

Air conditioning & heating

1 documented fault — symptoms, causes and workshop fixes.

AC/heater outlet air temperature does not correspond to setting

Poor sealing of in-car temperature sensor air intake ducting allowing air to escape.

Overview

Affects
All models.

Repair steps

  1. Remove in-car temperature sensor air intake ducting assembly.
  2. Fit foam pad to in-car temperature sensor air intake ducting. Ensure foam pad covers edges of air intake ducting.
  3. Refit in-car temperature sensor air intake ducting assembly.

Parts

Parts listed in the bulletin
PartPart numberQty
Foam padETD 5005501

Data: Motorwise Workshop. Bulletin 9.

Other

1 documented fault — symptoms, causes and workshop fixes.

Cracking noise from left hand speakers in DAB mode

Overview

Affects
All models with digital audio broadcast (DAB) audio unit.
Remedy
Software update

Cause

Digital audio broadcast (DAB) control module software fault.

Repair

  1. Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
  2. If no fault(s) found: Re-program digital audio broadcast (DAB) control module with upgraded software. Note: To carry out an effective repair a software upgrade will be required - refer to manufacturer.

Data: Motorwise Workshop. Bulletin 8.

Glossary

Technical terms used in this guide.

ECM
Engine control module — the electronic unit that manages the engine
VIN
Vehicle identification number — 17 characters, found at the base of the windscreen and on the V5C logbook
DAB
Digital audio broadcast — digital radio
TC
Turbocharger — the exhaust-driven compressor that boosts engine power
TCM
Transmission control module — the electronic unit that manages the gearbox
Control Module
A control unit for one of the vehicle's systems (engine, gearbox, brakes, body, and so on)
In-Car Temperature
The cabin-temperature sensor used by the climate control
Instrument Panel
The dashboard display that shows warning lights and messages
Intake Manifold
The housing that distributes air into the cylinders
Intercooler
A radiator that cools the air coming out of the turbocharger before it enters the engine
Limp Home
A protective mode that limits power so the vehicle can be driven to a workshop
Re-Program
Update the software on a control module using the manufacturer's diagnostic tool
Trouble Code
A standardised fault code stored by a control module, read with a diagnostic tool
Bonnet Switch
The switch that tells the alarm whether the bonnet is open
Bush
A rubber mounting that lets a suspension or body joint move without metal-to-metal contact
Lower Arm
A suspension link that locates the wheel at the bottom of the hub
Universal Joint
A flexible coupling in a driveshaft that lets it bend as the suspension moves

Frequently asked questions

What are the common faults with the Land Rover Discovery 4 Discovery 3.0 SDV6?

This guide contains nine workshop bulletins for the Land Rover Discovery 4 Discovery 3.0 SDV6. Of these, three concern the engine and fuel system and one the electrical and ignition. Symptoms, causes, repair steps and part numbers are shown where supplied.

Does every Land Rover Discovery 4 Discovery 3.0 SDV6 have these faults?

No. These are patterns documented across the model by workshops, not predictions for an individual vehicle. Where a fault applies only to certain vehicles or VIN ranges, that is listed with the fault.

Can I check for Land Rover Discovery 4 Discovery 3.0 SDV6 faults myself?

Many of them. The documented symptoms can be seen, heard or felt during a test drive.

Related guides

Glossary term

See in the glossary →