Summary
The Jaguar XJ6 has 12 recalls spanning 1975 through 1992, with the most serious being a 1990 model year issue where the rear brake caliper mounting bolt head can snap off, leaving the caliper inadequately secured and increasing stopping distances enough to cause a crash.
The final production year, 1992, has a seatbelt motor winch that can lock up or jam along its track, leaving occupants unable to use the automatic belt system and raising injury risk in a sudden stop or collision. The 1987 model year carries three separate concerns: a cruise control microswitch that can fail to cancel cruise control when the brake pedal is pressed and simultaneously kill the brake lights, a front suspension lower spring pan bolt that can fracture from stress corrosion and cause one side of the front suspension to drop onto its bump stop, and a brake power accumulator switch that can lose electrical power and prevent the hydraulic assist from recharging, reducing braking effectiveness when it is most needed.
Going back to the 1980 model year, two related fuel system issues exist: a gap too small between the fuel filter and ignition amplifier that can allow fuel to leak near ignition components, and deteriorating high-pressure fuel hoses in the engine bay that can also leak fuel, either of which can result in an engine compartment fire. The 1979 model year, on vehicles with the Borg Warner Model 65 automatic transmission, has a retaining pin inside the transmission that can work loose, allowing the gear selector to show "Park" while the transmission remains in gear, which means the engine can be started with the transmission engaged. The 1978 model year has two mechanical issues: an exhaust pipe that can contact the steering column coupling joint and restrict steering movement, and a throttle butterfly valve that can ice over in temperatures below -10°C and stick partially open, preventing the engine from returning to idle. A separate 1978 emissions-related issue involves an engine control unit harness that can be poorly grounded, enriching the fuel mixture and causing rough idle. The earliest recall, affecting 1975 models, covers exhaust gas recirculation manifold core plugs that can displace and cause the engine to stall or lose power.
