Problems With the Jaguar XJ6

by Kara Riccitelli
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Jason Kirk/Getty Images Entertainment/Getty Images

The Jaguar XJ6 has several known issues with its fuel, mechanical and electrical systems. Most of these problems resulted in recalls for the vehicle in the 1980s and 1990s. Fortunately, the manufacturer of this luxury sedan has come up with several fixes to address concerns about this vehicle's safety and function.

Fuel Systems

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In many of the Jaguar XJ6 models manufactured after 1990, there were issues with the fuel filters. Several fuel filter connectors were not produced correctly and caused the O-ring to not properly seal on the fuel line. This caused the potential for fuel leaks, which could cause a fire. In addition, some models in the early 1980s contained fuel hose connectors that could disintegrate and cause leakage of fuel. The manufacturer did issue recalls to replace faulty filters and connectors.

Seat Belt

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Jaguar also issued recalls on the XJ6s seat belts. Many of the Jaguar XJ6 models had issues with the seat belts. The lockup function of the seat belt failed and caused the belt to become stuck along the track. This in turn caused breaking and kinking of the belt tongue or cable. These damaged seat belt systems would not be effective safety devices in the event of a car crash or accident.


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Some models of the XJ6 had problems with the reed of the fixing bolt breaking off on the rear caliper. This broken bolt could cause an increase in the amount of time and distance it takes to stop when breaking, which could cause a car accident. Other known problems included rupturing of the fluid supply hose. This could cause a loss of fluid to the brake system, potentially leading to a loss of control of the vehicle and an engine compartment fire. The manufacturer issued recalls to replace the bolt and hose.

Electrical Systems

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In some of the XJ6s, the cruise control has been known to fail when engaging the brakes. The rear brake lights also fail to illuminate due to a problem with the assembly of a certain brake light switch. This could potentially cause a loss of brake lamps and failure of cruise control to stop. Other problems include leakage of the brake accumulator switch, which could cause a loss of fluid in the brake system. Because the switch is near the electrical wiring, electric power could be interrupted and control over the vehicle may be lost. The manufacturer will replace the faulty switch.

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