2005 Jaguar XK Sports problems

Filed Mar 1, 2010 · Brakes · 62,500 miles · GA

I was driving for about 1.5 miles with light traffic until I slowed and then stopped at a red light at the corner of highway 29 (lawrenceville highway) and oakland in lawrenceville, georgia. My vehicle was not the first at the light, as I was unable to turn right until the light changed at least 3 minutes later. When the light finally changed, I waited and then turned right, into the left of the two eastbound lanes (because I was planning to turn left within one block onto huff road). As I completed the turn and was straightening my wheel I saw a red signal on the dash which stated 'cruise control unavailable'. I thought that odd because cruise was not on and had not been engaged this journey. Immediately thereafter the message changed to 'dcs system failure' (not sure of those three letters but I believe that is what it said). I took my foot off the gas pedal when I noticed the red warnings and the car was not moving fast, maybe 5-10 MPH. At that point, immediately after the dcs failure message, the brakes engaged, lurching me forward. The brakes disengaged and I immediately saw a third message which stated 'power systems failure'. The car was not at a standstill but was rolling forward slightly downhill. The tachometer indicated the engine was revving quickly to about 3700-4000 RPM, but the car was not moving forward faster in response. I tried to depress the gas pedal but it had no effect on either the vehicle's speed or on the tachometer. I put on the emergency flashers and pulled the emergency brake as soon as there was no one behind me. Then I put the gearshift in park and turned off the engine. I had the vehicle placed on a flatbed transported to the dealership. After discussions for 2 weeks with jaguar engineers, a throttle assembly was replaced. I do not understand what a throttle assembly had to do with sudden braking. Jaguar has indicated I have 'provided insufficient evidence of my claim and so it has been rejected".