BMW 3: Chain tensioner

Chain tensioner
- Tensioning rail
- Sealing sleeve
- Chain tensioner with screw thread
Due to the cylinder head manufacturing process, the chain tensioner now has a
sealing sleeve with a
height of 12.5 mm instead of a sealing ring.
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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
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
SEE MORE:
Concept
Several iDrive functions can be operated by hand
motion using BMW Gesture Control.
Overview
The camera in the roofliner detects gestures that
are carried out in the area of the center console
at the height of the Control Display.
Activating/deactivating
Via iDrive:
1. "CAR".
2. "Settings".
The vehicle owner can transfer a digital key for
his/her vehicle to another person with a compatible
smartphone via the BMW Connected app.
When a digital key is transferred, a transaction
number TAN will be generated. Another person
can pair the digital key in the vehicle with this
TAN and the Digi