2003 Jaguar Xkr - Answered Questions & Fixed issues

At www.reliable-store.com get complete guide on whether to repair or not, service it, and how to repair etc, along with wiring diagrams, electrical diagrams, torque specs, error codes, everything.

is this car the all alluminium xk model ? if so it sounds like a bad earth the earth studs are all bonded to the body and are prone to detatching from the body and causing all strange probs. the favorite ones are both front behind the wheel arch liners, if its the older xk still sounds like a bad earth poss behind the headlamps. the only other probs i had was wires coming detatched/poor connection from the column switch, hope this helps

Invest in a cheap fault code reader from Amazon or eBay which will help you pinpoint the problem

check connector on pretensioner for selt belt

possibly bad tumbler might change ignition, heavy key rings are responsible for a lot or ignition problems, lighten up your key rings

you can safely drive with this light on. it will be like driving a car without traction control. some also shut off the ABS system(anti-lock brakes) but again its like driving without this system like cars use to be before all this new options came out.

the valet key has a green housing and should only fit the door lock and ignition lock, not the boot or glove box.

dont cars steal have key latch on the trunk/ my dads Jag is an 06 and has a key slot in the trunk

It my be the oxygen sender it is a common problem with efi

have you had the OBD codes read , may just need the codes clearing as might have a stored code that has been a tempory issue

you will need to get the fault codes out of the engine control module to help sort this one tipical causes are air leaks or throttle body problems.

you could have plugged the fuel filter by running it empty. Check that first.

It means the system has passed self testing.

The Code 455 is showing the large leak in the Evaporative system (gascap) and the Code 1111 shows there are no defects.You can get these codes wiped off with a scanner free at Autozone, Oreilys, or Advance. They may clear by themselves after 35 startups.It would just appear to be a latent record of the old condition before and after you tightened the gascap.

if i am not mistaken that code is for a oxygen sensor...does it idle rough?what is it doing?

could be damaged wires in the door pillar to door rubber boot ,also the self locking mechanism will not work if this fault is prevalant ,personaly i do not like self locking vehicles as i do feel they are dangerous in a accident but??

DTC P1642 is for a loss in CAN communication. You will need to read the codes from the other modules to see which one is the culprit. From your description is does sound like the CAN network went down. It may be a problem with the inertia switch. It may have partially tripped causing this problem.

See your owner manual for the location of your inertia fuel cutoff switch. It cuts off power to the fuel pump in an accident.

CAN is the communication network where all teh computers in your car talk to one another. There appears to be a problem intermittently here.

The following results can be found on http://www.blujag.co.uk and would appear to indicate a fuel system problem. hope this helps
Fault Code P0452
Indicates a Generic Power-train fault
The fault is generally due to a problem in the Emission Control area
Fault Description: Evaporative Emission Control System Pressure Sensor Low Input
Fault Code P1642
Indicates a Manufacturer Specific Power-train fault
The fault is generally due to a problem in the Computer & Output Circuit area
Fault Description: Fuel Pump Monitor Circuit High Input

this sounds like a bad sending unit which is inside the tank, or a bad connection, check the wiring and the ground going to tank for the fuelpump and sending unit, the unit is located inside the tank,

there is a manual keyhole in the XKR badge below the right hand rear lamp cluster