Battery Issue

[Grattik]

Hi all

I have an XF 2.2D and had it serviced today, I asked the dealer to take a look at the start/stop system as it has not cut in for over 2 months and I seem to sporadically get a low battery warning when starting for the first time in the day.

They said the charge is fine but they charged it while it was with them and that the system should function now. Drove it home and didn't cut in once. Also got the low battery warning again so took it to a motor spares place and they checked the battery and it said that the status was "great".

Any ideas anyone? Could the battery monitoring system be faulty?

Thanks for any help you might be able to provide.

[JOE-DOT-COM]

Hi

If its not working its usually a battery issue

it wont stop the engine, unless the battery meets a certain voltage/capacity level

if it thinks the battery is low, then it wont work and this is still wrong time of year for your battery to be tip top, cold mornings, longer glowplug heater times, heated seats, heated screen, heaters, stereo

I would put the battery on charge over night, no need to remove the battery, then start the car, use no accesories, no heater, lights, just the engine basically, then take it for a run till the engine is up to temp, then see if it works

If it does start working for a short while, then your battery is most probably due for replacement, especially if the battery is over 3 years old on a diesel

not sure on the xf, but on some start/stop cars, when you fit a new battery, there is facility to calibrate battery, for stop/start in manufacturers diagnostic software

cheers

Joe

[TJM]

I would say that its the Battery - I have had this on another car and yes the engine needed to be told that the battery had been replaced been fine ever since!

[Grattik]

Just a quick update, I contacted jaguar customer service as I wasn't convinced by my dealers explanation.  They arranged for the car to be checked and it turned out to be a faulty battery and replaced it under warranty.