2017 Tiguan not driven for 8 Months: Battery Life / Replacement

[Surly78]

Hook it to the positive terminal and the knobbed nut on the firewall behind the battery, turn it on, open a beer wait 24 hours disconnect and drive away

Cheers. Will take a look.

[Hillbilly]

Cheers. Will take a look.

Heres pic of it You can see the round head nut and above it a flat piece of metal sticking towards you. Thats where you hook the negative
Page in manual of Jumpstarting but positions are the same for charging

[drivesafe]

When connecting jumper leads or leads from a battery charger, you always connect the positive lead to the flat/faulty battery’s Positive ( + ) terminal first and then you connect the negative lead somewhere other than the battery’s negative ( - ) terminal.

The reason you place the negative connection somewhere other than the battery’s negative ( - ) terminal is to reduce the chance of Igniting hydrogen gas that may be escaping from an overworked or damaged battery.

So that earth bolt behind the cranking battery is NOT a safe place to connect the negative lead as it would put your face directly in the path of the battery if it exploded as you connected the negative lead and it cause a spark.

For safety reasons, find a solid UNPAINTED nut or bolt some distance from the battery.