Having a restoration shop and running several newer Jaguars I have seen similar situations. Intermittent multiple errors such as these can be caused by a low battery (or corroded connections) that "fool the computers". Also had a '99 XJ8 VDP have exactly the same issues over several months. Issue was a manufacturing fault in the sensors on the throttle body that caused the "limp home" mode - usually in stop and go traffic. Jaguar had an inspection and recall on the throttle bodies but that vehicle had gone through 3 different Jaguar dealers for service and none looked at TSB/Recall or performed the necessary checks on the throttle body. Tried cleaning the throttle several times (per Jaguar TSBs) but no change. Had to replace throttle body & problem solved (over 30,000 miles since then). Recommend making sure all air connections to throttle are clean and open and cleaning the throttle area to see if that helps.
On newer Jaguars (and other Al bodied cars) similar problems occur when the "ground" connections to the body become poor (usually through corrosion but sometimes through collisions). Connections may look perfectly normal but have high resistance. Careful when working with the connections - the posts are usually very loosely fastened to the bodies. Good luck.
SOURCE: 1990 chrysler lebaron goes into limp mode have to
The symptoms you describe, "limp mode", no check engine light, after a restart you get a temporary cure, and the year of your vehicle, tell me your catalytic converter is becoming clogged.
As your vehicle warms, the exhaust pressure builds and can't properly escape through the catalytic converter. When you turn the vehicle off, the pressure slowly releases, and when restarted it will run ok again until the pressure builds.
I would replace the catalytic converter, and that should resolve your issue.
I hope this information helps you, and I wish you luck on your repair.
SOURCE: message system reads "engine system maintenance required"
WHAT HAPPENED IS WHEN YOU SHUT DOWN AND RESTARTED YOU (RESET THE ENGINE MANAGEMENT COMPUTER) AND THE SERVICE LIGHT SHOULD GO OUT AFTER 10 MINUTES OF DRIVING
SOURCE: traction control light comes on while driving in good weather
My 2002 Millenia just started doing this the other day, while on the freeway when it started doing it i would shut engine off and restart it and it would be good for a while then it would do it again, i am still looking for solution, has any one found one?
SOURCE: XK8 ABS FAULT LIGHT COMES ON INTERMITANTLY PLUS
Number of possibilities. Most likely culprit is wheel bearings. Have these checked. Big heavy car and wheel bearings do take a hammering on XK and XJ's. Once they go, the wheel speed sensors are out of line with the tracking ring and a fault code is thrown. As the TCS uses the same sensor, this also throws a fault. Next in line is the ABS unit (it's hardly ever the main block, but ECU itself, companies on the net offer rebuilt units. Finally it can be the ABS pump unit - but the fault codes will show if this is the case - or you can pull the pump unit plug out of the ABS unit and see if it has continuity with a multimeter - should be a low number of ohms. 8 times out of 10, it is wheel bearing.
SOURCE: have a 1998 xk8 jaguar,and
Please see my tip at http://www.fixya.com/cars/r6003525-abs_traction_control_lights . These are genericinstructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.
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