1 Series E81 118i (N46T) 3-door
1.
Switch on ignition.
2.
Set heater to maximum temperature, activate A/C system (if
fitted), then reduce fan to lowest setting.
Important: The auxiliary water pump must deliver coolant in
order to ensure fully venting!
3.
Perform filling operation slowly.
Use only recommended coolant.
Check cooling system for leaks.
4.
Pour coolant into coolant expansion tank up to MAX mark.
Close vent plugs on coolant expansion tank and on oil-to-
water heat exchanger (N46).
5.
Start engine and run at idle speed for approx. one minute
(cap open). Then adjust coolant level to MAX.
Close cap (1) and run engine up to operating temperature until
main thermostat opens. Check cooling circuit and drain plug for
leaks.
Installation:
Close cap (1) until the arrow marks line up.
Important!
The engine must be cooled down before the coolant level is
checked. Coolant temperature must not exceed 30
°
C. If
ambient temperature is above 30
°
C, allow engine to cool
down to ambient temperature at least.
Check coolant level and adjust to MAX.
Note:
Do not fill coolant expansion tank over MAX level as overfilling will
cause the coolant to overflow.
RA Venting cooling system and checking for water leaks (N45, N46)
BMW AG - TIS
18.01.2013 20:59
Issue status (12/2007) Valid only until next DVD is issued
Copyright
Page - 2 -
