2011 Jaguar XK Problems: 14 Known Issues

On the 2010-2015 Jaguar XK, the mechanical water pump on the 5.0L AJ133 V8 is a recognized weak point. Coolant migrates past the shaft seal into the bearing housing, corroding the bearing so the impeller shaft is no longer properly supported. This accelerates wear on the flat-face mechanical seal and lets coolant escape at the pump. Failures are common and can occur early — some owners report leaks in under 20,000 miles. Left unaddressed it leads to progressive coolant loss and overheating risk on an aluminum V8.

On the 2007-2015 Jaguar XK, the AJ-V8 routes coolant through molded plastic pipes in the engine 'valley'/V (the crossover pipe that plugs into the block, and on 4.2/supercharged cars the valley pipes beneath the supercharger). With age the plastic embrittles and the molded seam splits, or the stubs shear at the block, causing sudden major coolant loss. Because the failure is buried under the intake/supercharger, leaks are hard to spot and can strand the car. Jaguar published a TSB (JTB00566) on coolant leaks from the engine compartment.

On the 2007-2015 Jaguar XK, the AJ-V8 engine in the XK shares the same timing chain tensioner weakness found across the Jaguar V8 range. The hydraulic tensioners bleed down when the engine is off, causing the timing chains to rattle on startup and progressively stretch until timing is compromised.

On the 2007-2015 Jaguar XK, the electronic throttle body on the XK develops position sensor failures causing erratic throttle response, limp mode, and check engine lights. The dual-track position sensor wears internally, sending conflicting signals to the engine management system.

On the 2007-2015 Jaguar XK, the AJ-V8 uses individual coil-on-plug ignition coils that fail with age and heat, producing single- or multi-cylinder misfires and a check-engine light. A frequent contributor is oil pooling in the spark-plug wells from a leaking cam-cover gasket, which fouls the coil boots. Coils typically last 70k-100k miles but wear faster with heavy idling and heat cycling.

On the 2007-2015 Jaguar XK, on supercharged XKR models the Eaton supercharger drive uses a plastic coupler/isolator in the nose cone that damps the input drive. The isolator spring breaks and the drive forks wear into the plastic coupling, producing a rattle that steadily worsens. Owners describe a 'bag of marbles' sound from the front of the supercharger snout and a shudder/clonk when shutting the engine off. Jaguar issued a TSB addressing supercharger clatter/knock/rattle on the 5.0L SC engine.

On the 2007-2014 Jaguar XK, the ZF 6HP26 (2006-2009 4.2L cars) and ZF 6HP28 (2009-2014 5.0L cars) automatic used in the X150 XK develops internal hydraulic-pressure loss as the mechatronic unit ages. The 'bridge seal' adapter (the figure-8 sealing sleeve between the valve body/mechatronic and the transmission case) hardens and cracks, and the conductor plate/solenoids degrade, causing loss of line pressure. This is the single most common ZF 6HP fault and owners frequently misdiagnose it as a dead gearbox, replacing the whole unit when only the mechatronic seal or module is at fault. ATF that is never changed (Jaguar marketed it as fill-for-life) accelerates the failure. Well documented across the shared ZF 6HP platform (also used by BMW, Land Rover, Bentley, Maserati).

On the 2007-2015 Jaguar XK, xK owners frequently report flat batteries from parasitic draw when a control module fails to enter sleep mode. Normal quiescent draw should fall to roughly 30-50 mA within about three minutes of lock-up; faulty cars have been measured at 200-220 mA, enough to reach 50% state of charge in under two weeks. The Body Control Module (BCM) is a documented culprit (including cases of burnt board traces/failing capacitors), and the fault is worst on cars driven infrequently.

On the 2007-2015 Jaguar XK, the X150's center touchscreen commonly goes black or unresponsive while audio and climate keep working, or it sticks on the Jaguar logo and never boots. The root cause is often a fault on the fiber-optic MOST network (a broken ring or a module dragging the bus down) rather than a bad screen itself. Bluetooth, DVD-navigation and Sirius modules on the ring can trigger the blackout, and weak battery/ground connections make it worse.

On the 2007-2015 Jaguar XK, the XK convertible fabric roof mechanism develops faults in the hydraulic actuators and limit switches. The complex folding mechanism jams mid-cycle, leaving the roof partially open. Microswitch failures send incorrect position signals to the roof control module.

On the 2006-2014 Jaguar XK, the rear driveshaft (propshaft) on the X150 XK uses a bonded rubber flexible coupling — the 'rubber doughnut' or Jurid coupling — that perishes and splits with age and heat. Unlike earlier Jaguars where the coupling was a replaceable item, the X150 propshaft was progressively lightened and Jaguar does NOT list the rubber disc as a separate service part, so an official repair requires a complete driveshaft assembly. As the rubber cracks the shaft goes out of balance, producing vibration and eventually a clunk under load; a fully separated coupling can strand the car. Owners and independent Jaguar specialists have successfully cross-referenced/sourced the coupling separately (S-Type/X350 lineage; aftermarket suppliers now stock an X150 Jurid coupling).

On the 2007-2015 Jaguar XK, the X150 electronic parking brake is a frequent trouble spot. Small plastic serrated gears inside the EPB motor unit strip, the wiring harness between the parking brake module (PBM) and actuator chafes, and the module/switch can fault. Failures range from a 'Park Brake Fault' warning to the brake staying stuck ON so the car cannot be moved. The plastic gears are not sold separately, so a full motor assembly is usually required.

On the 2007-2015 Jaguar XK, the X150 front lower control arms use fluid-filled 'hydrobushes' (notably the large banana/curved front lower arm) to control NVH. These bushes perish and rupture with age and mileage, often between 30,000 and 60,000 miles, producing a clunk or knock over bumps and vague steering. A telltale sign is purple hydraulic fluid weeping from the bush. Most XKs need the lower arms replaced by around 60k miles.

On the 2007-2015 Jaguar XK, the X150 tire-pressure monitoring system throws recurring 'Tyre Pressure System Fault' or 'Tyre Not Monitored' messages. Two failure points dominate: the wheel sensors, whose molded-in batteries die after roughly seven years (not replaceable), and the TPMS receiver/module located under the driver's seat, which is a known failure. Wheel-arch initiators sit in a vulnerable, exposed location as well.