2004 Jaguar XJ8 Electrical system Problems
- Complaints
- 5about this part
- Share
- 9%of 54 total for the year
- Median mileage
- 60,118miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 5 complaints about the electrical system of the 2004 Jaguar XJ8, 9% of the 54 complaints for this model year. Where a mileage was given, the median is 60,118 miles. 1 of these say a crash was involved and 1 a fire, according to the filers.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Well I was driving along and all of a sudden just lost fuel power, so I pull over, cut the car off, and started the car up again and drove about a 100 yards and it repeated the same thing over again. I must have did it at least 6 times till I got home. So I'm thinking that it might be the throttle box, it's a fuel and electrical problem.”
NHTSA complaint #10672343, filed 2015-01, 119,236 miles“The power window on driver's side stopped operating while in the up position. Vehicle stalled on two occasions while driving at 35 MPH and 65 MPH. Vehicle restarted on both occasions, and the vehicle would vibrate severely while driving 50 MPH. Consumer stated vehicle had been to the dealer 8-10 separate times, but problem recurred. The electrical sstem has problems. Radio changes funtions from am to fm to cd by itself without consumer input. Windows go down without the consumers input and will not close. Interior lights do not work when driving. …”
NHTSA complaint #10094976, filed 2004-11, 1,000 miles“The contact owns a 2004 Jaguar XJ8. While driving 5 MPH the vehicle would not stop when the brakes were applied this caused him to crash into another vehicle. The road conditions were dry. The contact stated that there was damage to her bumper. The failure occurred on five occasions however only two resulted in a crash. The dealer was unable to diagnose the failure. The first failure mileage was 5,000 and the current mileage was 10,500 when turned in on 05/02/07. Updated 02-01-08 the consumer stated each occurrence transmission lost ability to downshift. …”
NHTSA complaint #10198769, filed 2007-08, 1,000 miles“Dt: 2004, Jaguar, XJ8. Vehicle had to have the brakes and transmission replaced. Also, vehicle needed a new starter because the key will not come out of the ignition. After vehicle was taken to the dealership the catalytic converter made a popping noise. There were no other problems with the vehicle to the best of the consumers knowledge. Consumer felt that the mechanics working on vehicle were guessing as to the cause of the problem without solving the problem, consumer took vehicle back to the dealer 12 times since purchasing vehicle on june 25, 2005.”
NHTSA complaint #10126516, filed 2005-06Related service bulletins
- 10212845Apr 14, 2021Attachment.
- 10212844Apr 14, 2021Attachment.
- 10212843Apr 14, 2021Attachment.
- 10146032Aug 20, 2018A customer may report "Hood Open" message displays on IP with hood closed.
- 10146031Aug 20, 201818C - New face of InControl Touch Pro and 18C software improvements
- 10212857Dec 1, 2012Mongoose Update.
- 10212838Sep 28, 2012Image.
- 10212837Sep 28, 2012Image.
Electrical system: other model years
Other parts of the 2004 Jaguar XJ8
17 complaintsVehicle speed control
12 complaintsBrakes
9 complaintsTransmission and drivetrain
8 complaintsEngine
5 complaintsEngine cooling
4 complaintsBody and structure
4 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsAir bags
2 complaintsExterior lighting
2 complaintsFuel system
2 complaintsOther or unknown
2 complaints
← All problems reported for the 2004 Jaguar XJ8
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology