Safety and Compliance Flashcards

Before replacing the rear brake pads on a VW with an electronic parking brake (EPB), what must the technician do?

Answer: Put the EPB into service/maintenance mode with a scan tool

Service mode retracts the EPB caliper pistons electronically, which prevents damage to the motor and gives a safe working position.

An airbag module has been removed and must be set on a workbench. How should it be placed?

Answer: Trim/deployment side facing up

Face-up placement keeps the module from launching itself if it deploys unexpectedly.

Before doing electric welding on a VW body, which step best protects the control modules?

Answer: Disconnect the battery and follow the repair manual's welding precautions

Disconnecting the battery and following the factory precautions helps prevent voltage spikes that damage electronics.

A technician replaces the AGM battery in a VW with battery energy management. What extra step is typically needed?

Answer: Code/adapt the new battery to the vehicle with a scan tool

The battery management system needs the new battery's data so it can charge it correctly and keep it alive longer.

When disconnecting a 12V lead-acid battery, which cable should be removed first and why?

Answer: Negative, to prevent arcing if the wrench touches ground

Removing the ground cable first means a wrench touching the body cannot short the positive terminal.

What gas produced by charging lead-acid batteries creates an explosion hazard?

Answer: Hydrogen

Charging releases hydrogen gas, which is explosive near sparks or flames.

Before opening the fuel system on a VW TSI direct-injection engine, what must the technician do?

Answer: Relieve fuel pressure according to the repair procedure

Direct-injection systems run at very high pressure, so pressure must be relieved before opening any line.