Battery, Disconnecting And Connecting: Notes

Accident risk.

• When working on pyrotechnic components (such as airbags and belt tensioners), the battery must be disconnected with the ignition switched on, contrary to the following description.

This is a risk of reducing agent leaking out on vehicles with a selective catalytic reduction system.

• After the ignition is switched off, the reducing agent goes from the metering line to the Reducing Agent Injector -N474- and back into the reducing agent active chamber.
• Wait until all the reducing agent has been returned before working in this area. This could take up to 10 minutes after switching off the ignition.
• Only after this is complete can the battery be disconnected. Again, this could take up to 10 minutes after switching off the ignition.