Audi A3 Setting off e-tron Plug-in hybrid drive
Applies to: vehicles with plug-in hybrid drive
Fig. 130 Engine compartment: Coolant expansion tank
Fig. 130 Engine compartment: Coolant expansion tank
Your vehicle has two separate coolant expansion tanks:
-A-: Expansion tank for combustion engine and electric motor.
-B-: Expansion tank for high-voltage area.
Expansion tank -B- must not be opened .
Switch off the ignition.
Open the bonnet link.
Always check the coolant level in both expansion tanks -A- and -B- using the external markings as a guide.
Please read the information on link before topping up the coolant in expansion tank -A-.
Do NOT drive on if the coolant level in the expansion tank -B- drops. Please contact a qualified workshop immediately .
WARNING
  • Before opening the bonnet and checking the coolant level, please observe the warning information on link.
  • Expansion tank -B- may be opened and topped up by a qualified workshop only.
  • When coolant is added to expansion tank -B-, it can get inside the high-voltage battery and cause a short circuit - risk of fire!