Battery Disconnect procedures
hi John
Hope your well
I joined the G350d 64' plate club too last month hooooray. I hope mine dont do that!
I personally believe losing the Aux Battery power will erase any ECU proggraming that may have been installed after factory installation. It happened on on my 110 defender with better torque and bhp increase by 'Alive' tuning.
Retrain the gearbox to AMG style lol
I am happy to let the gearbox train itself.
Clock resets itself from the time signal on the radio channels. Neat.
There is still plenty of responsiveness and power in the engine, so I think tuning is retained (in my case) and no indication that the Aux Battery failed. But I was surprised that no courtesy lights remained on etc and had heard that the Aux battery might have enough juice to turn the engine - makes sense in a ruggest vehicle to have such backup but everything was dark - not even central locking retained which meant using the key to lock drivers door.
Hi mate
Its funny because I thought it was the earlier versions that only had battery drains!
Have you now replaced the main car battery and Aux too?
For eg. The G55 You saw at silverstone Had a small problem too.
The battery would slowly die after if not used for good two weeks, I went on many forums as we do and many pointed to car not sleeping for many electric componenets. I strted with the Satnav/Command and it ended up being the issue. The unit used to swith on/off randomly when you opened the door first thing and sometimes took a while to get sound out of the speakers. I found a w203 version on ebay cheap in fine working and good condition. This somehow eliminated the issue.
Ie: alarm system, satnav, ecu front pasenger footwell area get wet from wiper spindles and water finds thier way to main engine ecu and fuse/relay area(common). Door kick plates not switching off, front/rear led lights malfunctioning allowing centre/ fusebox not to sleep.
And Can bus wiring corrosion/ wires coming out of retain clips/boxes.
The list goes on........
But there are many things that can trigger Slow drains I found on earlier ones, I am still learning about the new ones.
I am happy to let the gearbox train itself.
Clock resets itself from the time signal on the radio channels. Neat.
There is still plenty of responsiveness and power in the engine, so I think tuning is retained (in my case) and no indication that the Aux Battery failed. But I was surprised that no courtesy lights remained on etc and had heard that the Aux battery might have enough juice to turn the engine - makes sense in a ruggest vehicle to have such backup but everything was dark - not even central locking retained which meant using the key to lock drivers door.