X400 · 2001—2010 · Saloon & Estate

The complete X‑Type
service and reference archive

Torque figures, fault codes, part numbers and inspection notes for every engine and drivetrain variant. Written to workshop standard, checked against factory documentation.

Articles: 87
Part numbers: 35
Last revision: 6 Sep 2026

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20 matching entries

A-001

What Is The EGR Valve?

How the diesel EGR works, why soot builds up in the intake, what blanking actually does, and the catch on the 2.2d automatic.

Engine

2.0d

2003–2010
A-017

Diesel wastegate actuator: glow-plug light, P132A / P132B, limp

Why the glow-plug light flashes, why key-off-and-on is only a stay of execution, and why carbon in the wastegate is the real fault.

Engine

2.0d

2003–2010
A-019

Thermostat housing and coolant crossover, V6

The plastic housing embrittles and weeps. Revised number, bleed procedure.

Cooling

2.5 V6

2001–2010
A-047

P0171 and P0174: intake gasket and MAF drift

The two failure modes that account for most lean banks on the V6. Smoke test, gasket numbers, idle MAF window.

Engine

2.0 V6

2001–2008
A-066

Glow plugs and injector seals on the diesel

Extracting a seized glow plug without the head off, and the copper washer that stops the soot ring.

Engine

2.0d

2003–2010
A-112

Transfer case whine and viscous coupling wear

The rising drone between 40 and 60 mph on AWD cars, a bench test for the viscous unit, and the fluid that is routinely got wrong.

Transmission & AWD

2.5 V6

2001–2010
A-155

Plenum drains, a wet footwell and a dead BCM

Blocked scuttle drains flood the passenger carpet and take the body control module with them.

Electrical

2.0 V6

2001–2006
W-401

Won't Start: Silent Starter, or It Cranks and Never Fires

Park/neutral, battery cover, headlights as a load test, PATS key chip, damp coil plugs, ECU feed, and the under-bonnet fuse tray.

Electrical

2.0 V6

2001–2009
W-402

Jump Starting The X-Type

Cover off the left-hand battery, red to plus, black to an engine mount, cars must not touch, key out so the locks do not fire.

Electrical

2.0 V6

2001–2009
W-404

Puddles: Oil, Coolant, Gearbox, Brake And PAS

Undershields throw the stain rearwards. Drain plug and filter, white coolant crust, inboard driveshaft seals, a wet caliper, PAS at the rack pipes.

Engine

2.0 V6

2001–2009
W-405

Towing The X-Type: Eye, Auto Limit, AWD Limit

Screw-in eye, left-hand thread, bumper cover on the left. Automatic 0.8 km at 50 km/h. AWD 50 km at 50 km/h, front wheels down unless the propshaft is out.

Transmission & AWD

2.0 V6

2001–2009
W-450

Fault Finding Method: Prove The Symptom First

Name the fault before you buy parts. Check fuel, battery and fuses first. Fix the cause, not the flat battery or the fouled plugs.

Engine

2.0 V6

2001–2009
W-451

Engine Will Not Start: Petrol Versus Diesel

Silent starter versus spinning and never firing. Petrol wants coils, plugs and PATS. Diesel wants glow, fuel filter and no air in the lines.

Engine

2.0 V6

2001–2009
W-452

Misfire And Poor Running

Idle shake, hesitation, stalls and a flat pull. Coils and plugs on petrol, injectors and filter on diesel, intake leaks before you blame the ECU.

Engine

2.0 V6

2001–2009
W-453

Overheating And No Cabin Heat

Low coolant, stuck thermostat, airlock, dead fans. No heat with a cold upper hose often means the thermostat never closes. V6 housing weeps are common.

Engine

2.0 V6

2001–2009
W-454

Brakes Pull, Feel Soft, Or Need Too Much Pedal

Tyres and loading first. Pull is often one seized caliper or mixed pads. Spongy pedal is air or a diesel vacuum pump. Hard pedal is servo hose or the pump.

Suspension & Brakes

2.0 V6

2001–2009
W-455

Electrical Drain And A Battery That Will Not Hold

Posts, belt and alternator before a new battery. Charge lamp on while running means the machine is not charging. Parasitic drain and a wet BCM are X-Type classics.

Electrical

2.0 V6

2001–2009
W-456

Noise, Vibration And Harshness

Wheel balance around 80 km/h, CV click on full lock, transfer case drone on AWD, and engine knocks that change with load. Name where you feel it.

Suspension & Brakes

2.0 V6

2001–2009
W-461

Petrol Fuel Pump Pressure Check

Listen under the rear seats at key-on, then gauge the Schrader on the right of the rail. Spec is 4.5 bar. Sensor torque 10 Nm.

Fuel & Exhaust

2.0 V6

2001–2009
W-464

Fuel Cut-Off Inertia Switch

Driver footwell kick panel, two screws. After a shunt or a hard bump the pump stays dead until you press the reset on top.

Electrical

2.0 V6

2001–2009