Jaguar XJ6 / XJR
X300 · 1995-1997Faults written up for this generation: likely causes and the order to check them in.
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5
Jaguar XJ6 (X300) ABS Light On, ABS Pump
On the X300 the moment the ABS lamp comes on tells you most of the story. On from start-up usually means a wheel sensor or its wiring.
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11
Jaguar XJ6 (X300) Air Conditioning Problems
On the X300 warm air is usually a low charge with code 23 — the gas seeps out, most often through a condenser corroded at its lower mounts.
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2
Jaguar XJ6 (X300) Alarm Keeps Going Off
On the X300 a false alarm is usually the boot-ajar switch in the boot-lid latch or a weak battery. Then the bonnet switch and broken wires at the right-hand boot hinge.
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4
Jaguar XJ6 (X300) Alternator Not Charging
On the X300 the belt is the first suspect, even when it doesn't squeal — slightly slack, it slips when cold, wet or loaded.
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5
Jaguar XJ6 (X300) Battery Drain, Flat Battery
On the X300 the car, not the battery, is usually to blame: radiator fans running with the key out, a body processor that won't sleep, the aerial circuit or a glovebox…
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3
Jaguar XJ6 (X300) Bluetooth and Phone Hands-Free
When a phone or Bluetooth kit won't silence an X300 radio, the radio's hidden TEL mode is usually switched off.
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3
Jaguar XJ6 (X300) Brake Lights, Tail Lights Not Working
When the brake, reversing and rear fog lamps die together on these cars, it's usually one fuse in the heelboard box under the rear seat that feeds the rear lamp module…
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4
Jaguar XJ6 (X300) CD Changer EE-01, EE-02, Won't Eject
EE messages are the changer's own mechanical complaints: EE-01 an eject or disc-change failure, EE-02 a disc left in the player. The changer rarely needs replacing.
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3
Jaguar XJ6 (X300) CD Changer NOT CONT
NOT CONT points at the changer, but the fault is usually inside the radio: a tiny resistor in the changer handshake circuit with a pad never soldered at the factory.
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9
Jaguar XJ6 (X300) Check Engine Light, Fault Codes
On the X300 a check engine light is usually the emissions side talking, not the engine failing: O2 sensors, their heater fuse, an air leak, the air pump or the EGR.
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7
Jaguar XJ6 (X300) Climate Control Not Working
On the X300 a climate panel that shows Er or beeps at start-up is usually a sensor that was unplugged, with the fault still stored.
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11
Jaguar XJ6 (X300) Cranks But Won't Start
On the X300 a healthy starter with no catch is usually the crankshaft position sensor, the ECU plug it feeds, or the fuel pump relay.
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3
Jaguar XJ6 (X300) Fuel Pump Problems
On the X300 a fuel pump that seems to have died is more often the pump relay or a hose blown off the pump inside the tank than the pump itself.
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9
Jaguar XJ6 (X300) Gearbox Problems, Gear Selector
On the X300 most selector trouble is electrical and cheap: a brake switch that won't release Park, or a sticking not-in-park microswitch.
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1
Jaguar XJ6 (X300) Headlights Not Working
When both headlamps or a whole beam die on these cars, it's usually a headlamp relay at the front of the engine bay, or the wire from the body processor that switches…
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6
Jaguar XJ6 (X300) Heater Not Working
On the X300 no heat usually means the electric heater pump has stopped — its motor brushes wear out, and new ones cost a few pounds.
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8
Jaguar XJ6 (X300) Immobiliser Problems, Won't Start
When the check engine lamp goes out a few seconds after the bulb check, the engine management has been told not to start.
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4
Jaguar XJ6 (X300) Instrument Cluster, Dash Lights
On the X300 a dark or dim dash is usually dead bulbs in the binnacle or the instrument illumination module by the column, once the dimmer and fuses are cleared.
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6
Jaguar XJ6 (X300) Key Fob Not Working, Fob Programming
On the X300 a dead fob is usually the fob itself: worn rubber buttons, dirty switch contacts or weak cells.
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5
Jaguar XJ6 (X300) Low Oil Pressure
On the X300 a zero reading or the oil light is usually the sender or its connector, not the engine.
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7
Jaguar XJ6 (X300) Misfire, Ignition Coil Failure
On the X300 a misfire is usually one of the six coils on the plugs, and after that the plugs themselves or oil in the plug wells.
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4
Jaguar XJ6 (X300) Oil Leak
On the X300 six the usual leaks are cheap seals, not the head gasket: the four O-rings under the oil filter housing, the camshaft sensor O-ring and the cam cover.
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8
Jaguar XJ6 (X300) Overheating, Cooling Fans
On the X300 six, overheating in traffic is usually the fans: a blown fan fuse, a loose fan plug, corroded fan wiring or the relay module.
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5
Jaguar XJ6 (X300) Power Antenna Stuck or Dropping
Before buying an aerial motor, look at the mast. A dirty mast snaps the plastic drive tape, and a cheap copy mast makes a working unit grind.
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6
Jaguar XJ6 (X300) Power Steering Problems
On the X300 a moaning, heavy or leaking power steering is most often air or old fluid, not a dead pump: a perished low-pressure hose or a loose spring clip lets air…
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2
Jaguar XJ6 (X300) Radio Code
First find out whether your radio has a code at all. Cars supplied new in North America were, as a rule, not coded.
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8
Jaguar XJ6 (X300) Radio Not Working or Buttons Dead
The X300 radio has a bad name, but most dead ones come back without a new radio. I'd start with the free fixes: every button pressed, a reset with the key on or the…
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1
Jaguar XJ6 (X300) Rear View Mirror Leaking, Auto-Dim
The X300 auto-dim interior mirror is an electrochromic cell filled with gel, and with age it bubbles, goes cloudy, stops dimming and then leaks.
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9
Jaguar XJ6 (X300) Rough Idle or High Idle
On the X300 a rough, high or stalling idle is nearly always the throttle body and what bolts to it: gum from the breather, a tired return spring, the idle valve or the…
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2
Jaguar XJ6 (X300) Speakers Not Working or Rattling
Rattles on these cars are almost always the speakers themselves, and often a free fix: glue on a split woofer cone, new foam on a door speaker.
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12
Jaguar XJ6 (X300) Steering Column and Memory Seat Problems
On the X300 the steering column, the mirrors and the driver's memory seat share memory modules, and a dead seat function is most often a blown 20 A heelboard fuse that…
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9
Jaguar XJ6 (X300) Stereo Upgrade and Radio Replacement
Any single-DIN radio fits an X300, but the car's radio plug is Jaguar's own, so an adapter lead does the job without cutting the loom.
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7
Jaguar XJ6 (X300) Suspension Knock, Rear Shocks
On the X300 a knock over bumps is most often the front shock top bushes, and next the rear shocks with their foam top mounts and spring isolators.
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4
Jaguar XJ6 (X300) Timing Chain Rattle, Tensioner
On the X300 six a rattle from the front of the engine is usually the early upper chain tensioner, which lets the top chain slap until oil pressure builds.
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6
Jaguar XJ6 (X300) Trunk Won't Open, Boot Release
On the X300 the boot opens electrically or with the key, and the battery lives inside it, so a flat battery is the commonest way to be shut out.
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2
Jaguar XJ6 (X300) Turn Signals, Indicators Not Working
On these cars a fast-flashing indicator almost always means one of the two front indicator bulbs on that side isn't lighting, and the usual reason is a loose or corroded…
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3
Jaguar XJ6 (X300) Vibration at Speed, Steering Wheel Shake
On the X300 a shake that comes in at a certain speed is most often a wheel out of balance or a tyre out of round; shake only when braking is the discs.
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3
Jaguar XJ6 (X300) Wheel Bearing Noise
On the X300 the front hubs still run on adjustable taper-roller bearings, so a hum from the front is often a dry or worn bearing, and play can be a matter of adjustment…
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9
Jaguar XJ6 (X300) Won't Crank, Just Clicks
On the X300 the starter itself is rarely the fault. The usual culprits are the battery feed through the bulkhead, the starter relay, the switch that tells the car the…