Jaguar S-type battery drain?
Discussion
Hello All,
I have a Jaguar S-Type 2002 (facelift) 2.5 V6 sport manual. When I bought the car (recently) the battery was dead and the car had to be jump started.
The car was serviced (Jag specialist) and the battery
changed (Bosch), after receiving the car back and running around for the weekend the car was left for 5 days, the car would then not start (totally dead) and had to be jump started again.
The car was sent back to the garage, after investigation they
detected a battery drain of approx 750 milli-amps (0.75A), checked after shutdown 45+ mins, normal discharge should be aprox 20-40 milli-amps(0.04A), they have informed me that they have checked out all usual suspects, interior lights, ALL fuses (pull each fuse, check drain process), door switches,phone, alarm, etc etc. all check-out OK. They have told me that the alarm does self arm which they find strange.
They are struggling to find root-cause of the drain, they thought potential issue with RECM, GECM, as they are staying active and are not shutting down. However today they had a customer car in for service, same spec as mine
(apart from Auto) and have swapped RECM & GECM , it still drains so they have eliminated this as cause.
Help!.........Any ideas how to diagnose the cause or ideas of what the cause of the drain is?, as I do not wish to fund changing expensive modules unnecessarily. The garage mechanics are ex Jag dealer techs so I don't know were to go and am getting
desperate, especially if they can't find the root-cause. The car has now been with them 11days.
Thanks in advance for any help you can provide.
I have a Jaguar S-Type 2002 (facelift) 2.5 V6 sport manual. When I bought the car (recently) the battery was dead and the car had to be jump started.
The car was serviced (Jag specialist) and the battery
changed (Bosch), after receiving the car back and running around for the weekend the car was left for 5 days, the car would then not start (totally dead) and had to be jump started again.
The car was sent back to the garage, after investigation they
detected a battery drain of approx 750 milli-amps (0.75A), checked after shutdown 45+ mins, normal discharge should be aprox 20-40 milli-amps(0.04A), they have informed me that they have checked out all usual suspects, interior lights, ALL fuses (pull each fuse, check drain process), door switches,phone, alarm, etc etc. all check-out OK. They have told me that the alarm does self arm which they find strange.
They are struggling to find root-cause of the drain, they thought potential issue with RECM, GECM, as they are staying active and are not shutting down. However today they had a customer car in for service, same spec as mine
(apart from Auto) and have swapped RECM & GECM , it still drains so they have eliminated this as cause.
Help!.........Any ideas how to diagnose the cause or ideas of what the cause of the drain is?, as I do not wish to fund changing expensive modules unnecessarily. The garage mechanics are ex Jag dealer techs so I don't know were to go and am getting
desperate, especially if they can't find the root-cause. The car has now been with them 11days.
Thanks in advance for any help you can provide.
Cars still at the garage (6 weeks now) after extensive investigation they called in a auto Elec specialist, he has identified controller area network (CAN) failure, they are now checking all device linked into the circuit and are about half way through, hopefully should be sorted soon......I hope (fingers crossed)
my only suggestion would be to sell asap it you cannot find the cause easily, your issue sounds different to mine...its a few years ago now, but my car spent 3 month with a jag specialist near Chester, they checked everything, stripped the interior and could still not find root cause of failure, they even took the bumper off to check harness as mentioned above...nightmare!in the end they put it down to a possible trapped loom behind the IP (dash)keeping boot module 'awake', car probably always had the fault from factory, was fine if you used daily, but leave it for more than 3 days it would not start... i sold the car on...would never buy another jag. (been on Mercs since...) Good luck!
Edited by Bentleyboy007 on Sunday 19th May 12:00
Edited by Bentleyboy007 on Sunday 19th May 12:02
Edited by Bentleyboy007 on Sunday 19th May 20:11
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