Hi All
i have a slight issue with my 2019 XE R Sport

i hadn't driven it for 12 months and the battery was dead and i mean Nothing - Zip - DEAD FLAT
i manually unlocked the car put some jumpers on the front terminals under the bonnet and opened the boot to gain access to the battery
i fitted a new battery
all good so far.

When i went to start the car i have no dash panel lights or stereo. and the car wont turn over at all.
I've tried locking and unlocking the car manually and electronically. do i need to wait for a set time before restarting the car. (Does something have to recharge in the computer before starting)

am i missing something here

Thanks in advance

 

Current battery voltage is 12.4v I do recall reading somewhere that 12.6 is minimum required to start the xe Jag is this correct, Could this be my issue

 

I never had an issue in installing a new battery for my XF. First, clean the cable terminals with a sand paper to remove rust, Then attach the battery cable + to + and - to - and then tighten. You'll know you did it right when the boot auxilliary light turns on. After that press your key fob remote to lock and unlock button to acknowedge the key fob. The car should start.

 

Check the voltage at the under bonnet/hood connectors that you used to power the trunk lid earlier. Should be close to battery voltage.
I hope you can confirm that the jump leads used to power the trunk lid were connected + to + and - to -

 

Thanks 2018f25t
yes it is strange
i did all you said but never cleaned the terminals. car has only done 47000km its like new
boot llight came on lights ect are all working

raido starts very slow then cuts out
seens to have no ignition to dash ect
its an auto (the selector knob doesnt rise up

its all a bit strange

 

Thanks Astomorg
ok we might be onto something here
voltage at battery noy 13.2 have had a smart charger on it over knight under bonnet is ZERO.

i assume there would there be a fuse or relay somewhere ?

 

Sorry i just rechecked the voltage and i had a dicky lead on my multi meter

Just confirming voltage at terminals under bonnet are virtually the same as at battery

 

Have your new battery tested for a "load test" from the place of purchase. It could be defective or have it charged if it passed. The battery should be at least 12.6 volts to start the car

 

Battery is at 12.9 without charger connected

seems strange that everything else is working just ignition/starting system seems to be out
should the start button be flashing when i go to start ??? i cant remember it it was solid or flashing when i last drove it.

 

Just to note on my APP is says the car is in sleep mode ?? could it be stuck in sleep mode and not waking up ??

 

Did you press the lock and unlock button on the key fob to acknowlege key fob? After that try, putting the key fob on the left side of the steering wheel column. Then press start button.See if it wakes up. IT should for it should detect the key fob in the perimeter

 

Yes mate have tried all that
Will try again now to double check

 

Any updates on this?