What are the most common Jaguar XK problems?
According to Au7o's analysis of 2,540+ owner reports, the 2015 Jaguar XK has 12 documented issues. The most frequently reported are: Timing Chain Tensioner Failure on AJ-V8, 5.0L AJ133 Water Pump Bearing and Seal Failure, Plastic Crossover / Valley Coolant Pipe Splitting. Of these, 3 are rated critical and should be addressed promptly.
Is the Jaguar XK reliable?
The 2015 Jaguar XK has 12 known issues documented across 2,540+ owner reports. 3 issues are rated critical: Timing Chain Tensioner Failure on AJ-V8 and 5.0L AJ133 Water Pump Bearing and Seal Failure and Plastic Crossover / Valley Coolant Pipe Splitting. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Jaguar XK problems?
Repair costs for known Jaguar XK issues range from $200 to $8,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Timing Chain Tensioner Failure on AJ-V8, typically costs $4,000-$8,500 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2007-2015 Jaguar XK Timing Chain Tensioner Failure on AJ-V8?
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. Repairs typically run $4,000-$8,500. Severity: high.
What is the 2010-2015 Jaguar XK 5.0L AJ133 Water Pump Bearing and Seal Failure?
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 c… Repairs typically run $550-$1,500. Severity: high.
What is the 2007-2015 Jaguar XK Plastic Crossover / Valley Coolant Pipe Splitting?
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… Repairs typically run $400-$1,400. Severity: high.
What is the 2007-2015 Jaguar XK Convertible Roof Mechanism Failure?
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. Repairs typically run $400-$2,500. Severity: medium.
What is the 2007-2015 Jaguar XK Throttle Body Position Sensor Failure?
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. Repairs typically run $300-$800. Severity: medium.
What is the 2007-2015 Jaguar XK Parasitic Battery Drain (Module Not Sleeping / BCM Fault)?
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… Repairs typically run $200-$1,200. Severity: medium.
What is the 2007-2015 Jaguar XK Electronic Parking Brake (EPB) Motor / Module Failure?
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' war… Repairs typically run $500-$1,300. Severity: medium.
What is the 2007-2015 Jaguar XK Front Lower Control Arm Hydrobush Failure?
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… Repairs typically run $700-$2,200. Severity: medium.
What is the 2007-2015 Jaguar XK Ignition Coil-on-Plug Misfire (Oil-Fouled Coils)?
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. Coi… Repairs typically run $300-$1,000. Severity: medium.
What is the 2007-2015 Jaguar XK Supercharger Nose-Cone Coupler / Isolator Breakdown?
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… Repairs typically run $500-$1,800. Severity: medium.
What is the 2007-2015 Jaguar XK TPMS Sensor and Under-Seat Module Failure?
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… Repairs typically run $200-$700. Severity: low.
What is the 2007-2015 Jaguar XK Center Touchscreen Blank / Unresponsive (MOST-Ring Fault)?
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… Repairs typically run $250-$1,500. Severity: low.
