Mercedes-Benz A-Class 2021 Operator's Manual page 318

316 Wheels and tires
Tighten the wheel bolts evenly in a diagonal
#
pattern in the order indicated until they are
finger-tight.
Unscrew and remove the alignment bolt.
#
Tighten the last wheel bolt until it is finger-
#
tight.
Lower the vehicle ( page 316).
/
#
Lowering the vehicle after a wheel change
Requirements:
The new wheel has been installed
R
( page 315).
/
To lower the vehicle: place the ratchet onto
#
the hexagon nut of the jack so that the let‐
ters "AB" are visible and turn counter-clock‐
wise.
Tighten the wheel bolts evenly in a diagonal
#
pattern in the order indicated 1
an initial maximum force of 59 lb-ft (80 Nm).
Tighten the wheel bolts evenly in a diagonal
#
pattern in the order indicated 1
the specified tightening torque of 96 lb-ft
(130 Nm).
& WARNING Risk of accident due to incor‐
rect tightening torque
The wheels could come loose if the wheel
bolts or wheel nuts are not tightened to the
prescribed torque.
Ensure that the wheel bolts or wheel
#
nuts are tightened to the prescribed
tightening torque.
If you are not sure, do not move the
#
vehicle. Contact a qualified specialist
workshop and have the tightening tor‐
que checked immediately.
Check the tire pressure of the newly installed
#
wheel and adjust it if necessary.
Vehicles with tire pressure loss warning
#
to 5 with
system: Restart the tire pressure loss warn‐
ing system ( page 294).
/
Exception: the new wheel is an emergency
to 5 to
spare wheel.
Vehicles with a tire pressure monitoring
#
system: Restart the tire pressure monitoring
system ( page 293).
/
Exception: the new wheel is an emergency
spare wheel.