Positive Crankcase Ventilation
This system returns blow-by gas to the intake manifold.
The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake manifold.
During partial throttle operation of the engine, the intake manifold sucks the blow-by gas through the PCV valve.
Normally, the capacity of the valve is sufficient to handle any blow-by and a small amount of ventilating air.
The ventilating air is then drawn from the air inlet tubes into the crankcase. In this process the air passes through the hose connecting air inlet tubes to rocker cover.
Under full-throttle condition, the manifold vacuum is insufficient to draw the blow-by flow through the valve.
The flow goes through the hose connection in the reverse direction.
On vehicles with an excessively high blow-by, the valve does not meet the requirement. This is because some of the flow will go through the hose connection to the air inlet tubes under all conditions.
On Board Refueling Vapor Recovery (ORVR)
From the beginning of refueling, the air and vapor inside the fuel tank go through refueling EVAP vapor cut valve and EVAP/ORVR line to the EVAP canister. The vapor is absorbed by the EVAP canister and the air is released to the atmosphere.
When the refueling has reached the full level of the fuel tank, the refueling EVAP vapor cut valve is closed and refueling is stopped because of auto shut-off. The vapor which was absorbed by the EVAP canister is purged during driving.
WARNING:
When conducting inspections below, be sure to observe the following:
CAUTION:
Continued refueling may cause fuel overflow, resulting in fuel spray and possibly a fire.
BMW Roadside Assistance
Principle
Contact the BMW Group Roadside Assistance if
assistance is needed in the event of a breakdown.
General information
In the event of a breakdown, data on the vehicle's
condition is transmitted to the BMW Roadside Assistance.
There are various ways of contacting BMW
Roadside Assistance.
Via ...
Rear wiper motor
Exploded View
Rear wiper motor
Back door
Rear wiper motor harness
Removal and Installation
REMOVAL
Remove rear wiper arm. Refer to WW-69, "Removal and Installation".
Remove back door finisher. Refer to INT-38, "Removal and
Installation".
& ...
Supplemental air bag warning light
The supplemental air bag warning light,
displaying in the instrument panel,
monitors
the circuits for the air bag systems, pretensioners
and all related wiring.
When the ignition switch is placed in the ON
position, the supplemental air bag warning light
illuminates for about 7 second ...