Software updates- battery state

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Gel
Posts: 3265
Joined: Thu May 22, 2014 12:02 pm
Location: Thames Valley UK
Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Post by Gel »

This article is interesting, as I recall Duncho (I think) outlining procedure necessary when applying updates yourself which most of us won't do. ;)
Know the engine has to be kept running during update and various other things switched on too.
From today's Honest John column.
Assault on battery

Your correspondent with the Jag XE with battery problems is being conned.
First of all, when doing software updates, all manufacturers require their dealers to buy a special charger (Land Rover, which is the same company, buy theirs from a British manufacturer who is in Somerset).
The chargers have huge capacity 60 amps.

They are attached to the vehicle when the download starts and control battery voltage so it will fluctuate from maybe 2 amps up to maximum 60 as the vehicle switches on various components such as heating and air con.

The result is the battery ends the update with the same battery voltage as when it started. In this case lack of use of the correct charger (or any charger, probably) has caused battery voltage to fall to a dangerous level and affected the stop/start system.
The battery will be fine if it’s recharged.
The AGM battery fitted to stop/start has a durability equivalent to 10 times a conventional flooded battery in the same application. 8-)
2014-19 J11A-14 1.5dci Ink Blue Tekna owner; now departed for a Mazda CX-5 GT Sport Nav, 2.0L Petrol :D

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