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New battery function - engine start or not?
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Madrilleno
 


Member Since: 13 Oct 2014
Location: Nottingham
Posts: 1786

England 
New battery function - engine start or not?

Just replaced the battery on my D4. I ran the "battery replacement" function from the Service/Test -> BCM menu.

The function turns the ignition off, and then turns it back on again. Should I let the ignition switch on without pressing the brake pedal, meaning the engine does not start, or put my foot on the pedal so that it does start? There are two rules for success,
1. Never tell everything you know.


D4 gone!
D5  
Post #218258326th Oct 2020 3:33 pm
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RATA1
 


Member Since: 27 Feb 2020
Location: Somerset
Posts: 353

United Kingdom 2014 Discovery 4 3.0 SDV6 XXV LE Auto Causeway GreyDiscovery 4

I don't know for sure either.
The message you get has always puzzled me so I usually start it but it does seem a little daft when "it" is capable of cycling the ignition itself. In today's world, if you contribute something, you don't contribute enough. If you contribute nothing, you receive everything.



2014 Discovery XXV
1961 Series 2  
Post #218259326th Oct 2020 4:44 pm
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JonM
 


Member Since: 24 May 2012
Location: North Yorkshire
Posts: 1247

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

I think (but am happy to be corrected) that the routine won't start the engine even if you have the pedal pressed. I think it will only turn the ignition on without running the starter.

When I changed my D4 battery exactly 3 years ago Shocked Wink I didn't press the pedal. MY2022 D5 HSE D300 - with extra nice bits added
MY2019 D5 HSE 3.0 SDV6 - sold to a dealer for a crazy price! - So good I bought another!
MY2012 D4 HSE 3.0 SDV6 - retired to a new home  
Post #218263626th Oct 2020 7:17 pm
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Madrilleno
 


Member Since: 13 Oct 2014
Location: Nottingham
Posts: 1786

England 

It does start the engine if you keep your foot on the brake pedal. Hope you’re well Jonathan. There are two rules for success,
1. Never tell everything you know.


D4 gone!
D5  
Post #218267326th Oct 2020 10:44 pm
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