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Watty



Member Since: 02 Oct 2013
Location: Kirkintilloch
Posts: 56

Scotland 2017 Range Rover Autobiography SDV8 Santorini Black
L405 stop start

My 17 4.4 autobiography stop starts, stops the engine then release the brake it pauses for a few seconds then switches the vehicle of.
Diagnostic search says starter disabled cranking time to long
Anybody any ideas of cause I have just fitted a new aux battery and did the reset 07 Vogue SE Java Black 3.6 TDV8
Black Leather heated/ cooled seats
Piano black trim deployable side steps
L405 Autiobiography 2017
Santorini Black with black pack
13 L405 4.4 Autobiography

Post #691539 29th Apr 2024 1:49pm
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stan
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Member Since: 13 Jul 2010
Location: a moderate moderated moderator moderating moderately in moderation
Posts: 35217

United Kingdom 

i gather this didnt happen before the battery replacement...

disconnect the aux battery [just the negative] and see if this makes any difference. ... - .- -.




Y. O. L. O.
.

Post #691557 29th Apr 2024 8:01pm
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Watty



Member Since: 02 Oct 2013
Location: Kirkintilloch
Posts: 56

Scotland 2017 Range Rover Autobiography SDV8 Santorini Black

This did happen before battery replacement, it caused me to check the battery and I found battery bad, hence the change 07 Vogue SE Java Black 3.6 TDV8
Black Leather heated/ cooled seats
Piano black trim deployable side steps
L405 Autiobiography 2017
Santorini Black with black pack
13 L405 4.4 Autobiography

Post #691566 29th Apr 2024 10:39pm
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Malbro



Member Since: 22 Mar 2023
Location: Cumbria
Posts: 17

United Kingdom 2016 Range Rover Autobiography SDV8 Carpathian Grey

Worth checking your main battery as this also influences the stop start feature. The reason I know this is because my stop start never worked when I bought my car but once a new main battery was fitted it worked perfectly.

Post #691611 30th Apr 2024 3:07pm
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Maher2023



Member Since: 20 Sep 2023
Location: Leicestershire
Posts: 56

United Kingdom 2018 Range Rover Autobiography SDV8 Fuji White

Watty,

My 2018 SDV8 has the same symptoms as your car, when the start/Stop kicks in at traffic lights and then when lift off brake the car shuts down, i would have to cycle the engine start button couple of time before the engine starts and then everything works fine.

I’ve sometimes also had problem string cr in the morning…where I get message on cluster saying ‘AEB not available’

Car is under LR warranty So going in May for TCU replacement and hopefully they can sort above problems as well?!

Post #691641 30th Apr 2024 11:39pm
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Watty



Member Since: 02 Oct 2013
Location: Kirkintilloch
Posts: 56

Scotland 2017 Range Rover Autobiography SDV8 Santorini Black

that’s the exact same let me know the outcome please
thank you 07 Vogue SE Java Black 3.6 TDV8
Black Leather heated/ cooled seats
Piano black trim deployable side steps
L405 Autiobiography 2017
Santorini Black with black pack
13 L405 4.4 Autobiography

Post #692049 7th May 2024 8:52am
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Maher2023



Member Since: 20 Sep 2023
Location: Leicestershire
Posts: 56

United Kingdom 2018 Range Rover Autobiography SDV8 Fuji White

Hi Watty,

I have got the car back today, they said they have replaced TCU under warranty and that has supposedly fixed all the issues I was having.

Only time will tell, I’ve not had chance to check everything today but the issue with Start/Stop and car everything going off…seems to have been fixed.

I tested start/stop at traffic lights on my way back and everything work fine.

But I’ll see how it goes in coming days….

Post #692267 9th May 2024 5:13pm
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Watty



Member Since: 02 Oct 2013
Location: Kirkintilloch
Posts: 56

Scotland 2017 Range Rover Autobiography SDV8 Santorini Black

thank you for the info 07 Vogue SE Java Black 3.6 TDV8
Black Leather heated/ cooled seats
Piano black trim deployable side steps
L405 Autiobiography 2017
Santorini Black with black pack
13 L405 4.4 Autobiography

Post #692281 9th May 2024 11:04pm
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