well i finally put the Jag back together, 2003 S-Type r, and it ran fine to the end of the block i got engine system fault and all gauges quit on me all emergency lights were on but the car was still working well under 1200 rpms it was. Now I turn on my car and get greeted with dcs not availabe, cruise not available, engine sytem fault and parkbrake fault. I apply parkbrake, and it works. I press gas pedal and it slowly revs to 2000 rpms. brakes are a little hard. I will get codes soon.

 

codes p0646 comes up twice and p0121 and p1000

 

P1000 means monitors not complete since last clear. OK unless you've done plenty of varied driving since then.

P0121 is TPS-related, P0646 is A/C-related. Odd. Could be a failing battery or other power problem (bad ground, etc).

 

well i was poking around and found a puddle of water in passenger back seat. so i checked fuses and behold my ecu was dripping wet.... we had a snow storm and my car was not in garage will i had removed the box for the cabin filter.

 

Blot up excess water from modules, then dry out somewhere warm but not too hot. Hope they're not damaged!

 

eekkkk.....that sucks about getting your fuse box all wet....hope it dont cost....

 

My 03 S-Type 4.2L acted up the same way, only the car has had no work done recently. Was this the fuse box in the trunk or under the hood? I had checked both yesterday and saw no moisture, but will now have closer look. Also, I have been driving in dry weather and the car is always garaged. Please let me know how things work out for you.

Best regards,