BMW 4 Coupe Series Manual page 340

MOBILITY
Lug bolt lock
Principle
The wheel lug bolts have a special coding. The
lug bolts can only be released with the adapter
which matches the coding.
Overview
The adapter of the lug bolt lock is in the onboard
vehicle tool kit or in a storage compartment close
to the onboard vehicle tool kit.
▷ Lug lock bolt, arrow 1.
▷ Adapter, arrow 2.
Unscrewing
1. Attach the adapter to the lug lock bolt.
2. Unscrew the lug lock bolt.
3. Remove the adapter after unscrewing the lug
bolt.
Screwing on
1. Attach the adapter to the lug lock bolt. If nec‐
essary, turn the adapter until it fits on the lug
lock bolt.
2. Screw on the lug lock bolt. The tightening
torque is 101 lbs ft/140 Nm.
3. Remove the adapter and stow it after screw‐
ing on the lug bolt.
340
Wheels and tires
Online Edition for Part no. 01405A392C9 - VI/21
Preparing the vehicle
▷ Park the vehicle on solid and non-slip ground
at a safe distance from traffic.
▷ Turn on the hazard warning system.
▷ Set the parking brake.
▷ Engage a gear or move the selector lever to
position P.
▷ As soon as permitted by the traffic flow, have
all vehicle occupants get out of the vehicle
and ensure that they remain outside the haz‐
ardous area in a safe place, such as behind a
guardrail.
▷ Depending on the vehicle equipment, get
wheel change tools and, if necessary, the
emergency wheel from the vehicle.
▷ If necessary, set up a warning triangle or port‐
able hazard warning light at an appropriate
distance.
▷ Secure the vehicle additionally against rolling.
▷ Loosen the lug bolts a half turn.
Jacking points for the vehicle
jack
The jacking points for the vehicle jack are lo‐
cated at the indicated positions.