General Information
Working on ignition system
Removing and installing electronic control units
Welding work (overload protection of control units)
Disconnecting and connecting battery
Disconnec
IMPORTANT:
Disconnecting the vehicle battery will cancel the fault memories
of control
units. Consequently, before disconnecting the car's battery, always
interrogate the fault memories. Invest
CHECKING COOLING SYSTEM FOR WATER LEAKS
Special tools required:
17 0 101 17 0 100 TESTER
17 0 113 17 0 100 TESTER
17 0 114 17 0 100 TESTER
WARNING: Danger of scalding!
Only perform this work after engine has cooled down.
Checking pressure drop in cooling system:
Open cap on coolant expansion ta