Volkswagen ID.4: Disconnecting and connecting battery

The battery monitor control unit - J367- will henceforth be referred to as "battery monitor control unit".

Battery - A- is referred to hereafter as battery.

Disconnecting

• Deactivate vehicle's drive system.
• Switch off ignition and electrical equipment.
• Open cover for negative battery terminal above battery monitor control unit -3-.
• Loosen nut -1- several turns, and pull battery clamp with battery monitor control unit -3- off battery negative terminal.

• Switch on ignition.
• Switch off ignition and electrical equipment.
• Place vehicle key and other entry and start authorisation devices (e.g. smartphone) outside vehicle.
• Make sure that 12V electrical system is de-energised with multimeter at jump-start connections.

Important

•  Voltage must be approx. 0 V. Electrical system found to be de-energised.

Vehicles whose electrical system cannot be found to be deenergised:

• ⇒ ; Rep. gr. ; De-energise high-voltage system .
• Make sure that 12V electrical system is de-energised with multimeter at jump-start connections.

Important

• Voltage must be approx. 0 V. Electrical system found to be de-energised.

All vehicles (continued)

Connecting

NOTICE

Risk of damage to the battery clamps for positive and negative battery terminals and to the battery terminals themselves.

• Battery clamps for positive and negative battery terminals may only be attached by hand without excessive force.
• Battery terminals must not be greased.
• Battery clamps for positive and negative battery terminals must be installed in such a way that the battery terminal is flush with the battery clamp or protrudes from it.

• Disconnect electrical connector -2-.
• Fit terminal clamp with battery monitor control unit -3- onto negative battery terminal.
• Tighten nut -1-.
• Connect electrical connector -2-.

• Switch on ignition.
• Open and close door windows to fully opened and fully closed position respectively.
• Then, when door windows are closed, pull the window regulator buttons until the relay audibly switches.
• Check convenience mode of the window regulator motors.

Important

• With "one-touch opening and closing" activated, door windows must close fully without the need to hold window regulator button.

This following work steps are necessary so that the ESP indicator lamp goes out:

• Activate vehicle's drive system.
• Select drive position.
• Move steering wheel to full left and right lock.
• Read and clear event memory using ⇒ Vehicle diagnostic tester.

Important

• ESC warning lamp must go out.

Tightening torques

• ⇒ Rep. gr. 27 ; Assembly overview - battery

Removing and installing battery tray

Removing

• Remove battery - A- ⇒ Rep. gr. 27 ; Removing and installing battery A .
• Unscrew bolts -2-.
• Remove cable tie from battery tray -1-.
• Remove battery tray -1-.

Installing

Install in reverse order of removal, observing the following:

Tightening torques

• ⇒ Rep. gr. 27 ; Assembly overview - battery

Removing and installing battery [A]Removing and installing earth wire with battery monitor control unit [J367]