Battery -A-, DISCONNECTING AND CONNECTING: Notes

Vehicles with 48V System (PR Number VH2/VH3) 

The 12 V system is supported by the 48 V system via the Voltage Converter, 48 V/12 V -A7-. So the only way for the 12V vehicle electrical system to be de-energized is to de-energize the 48V system beforehand.

• For subsequent work on the SCR system, wait until all of the reducing agent has returned after switching off the ignition.