BMW 3: Valve gear
VANOS
VANOS unit B46 engine and B46TU/B48TU engines
- VANOS B46 engine
- VANOS B46TU and B48TU engine
Following the changeover from a two-part chain drive to a single-part chain drive, the camshaft sprockets on the VANOS now have 46 teeth instead of the previous 36 teeth. To compensate for the additional weight of the larger camshaft sprockets, the adjuster was designed to be shorter and more compact. Additionally, the chain track was displaced by 1.5 mm.
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Belt drive
Comparison belt drive B46 engine and B46TU/B48TU engines
B46 Engine (transverse installation shown)
B46TU/B48TU engines (transverse installation shown)
Deflecting element
Alternator
Coolant p
Split cooling
Split cooling is a new development for the B46TU engine. This cooling concept
is a modified version
of which is already used in the N63TU2.
The Split Cooling function uses the electrical Split Cooli
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Unlocking
General information
The behavior of the vehicle during unlocking via
the Comfort Access depends on the following
settings:
If the unlocking of the vehicle is confirmed
with a light signal or a sound signal.
If the welcome light is switched on when the
vehicle is being unlocked.
If the exterior
Wiper system
Switching the wipers on/off and
brief wipe
Switching on
Press the lever up until the desired position is
reached.
Resting position of the wipers: position 0.
Rain sensor: position 1.
Normal wiper speed: position 2.
Fast wiper speed: position 3.
Brief wipe and switching off
Press the lever do
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