BMW 3 (E46). Manual — part 298

Do not expose pyrotechnic
components to temperatures
above 75°C (167°F).

Pyrotechnic components can
only be tested electrically when
installed, using BMW service
tester DIS, MoDiC or equivalent
scan tool.

Do not fire a pyrotechnic gas
generator prior to disposal. It
must be fired by a special
disposal company or shipped
back to BMW in the packaging
of the new components.

During body straightening and
welding with an electric arc
welder, always disconnect the
battery and the connection to
the pyrotechnic gas generators.

-

Detach battery negative (-) cable
in luggage compartment.

CAUTION!

Prior to disconnecting the battery,
read the battery disconnection
cautions given at the front of this
manual on page viii.

-

Remove front seat as described in

520 Seats

.

Remove pyrotechnic belt tensioner:

Detach tensioner harness
connector from seat rail by cutting
wire tie (A).

Detach harness connection (B).

Remove tensioner mounting bolt
(C).

Check tensioner mounting bracket
(arrow) for damage or bending.
Replace if necessary.

CAUTION!

A bent tensioner mounting bracket
may make it impossible to adjust
seat height.

When reinstalling:

Replace wire ties to relieve tension
on the pyrotechnic belt tensioner
harness connector.

Make sure tensioner harness
connector mounting bracket
(arrow) is installed correctly.

Tightening torques

Front seat to floor
(M10 fastener)

45 Nm (33 ft-lb)

Seat belt to seat

48 Nm (35 ft-lb)

Tensioner
mounting bracket
to seat rail

24 Nm (18 ft-lb)

Tensioner to
mounting bracket

48 Nm (35 ft-lb)

Front seat belt

assembly (Sedan,
Coupe, Sport Wagon)

1

-

Seat belt buckle

2

-

Tensioner
mounting bolt

tighten to 48 Nm (35
ft-lb)

3

-

Seat belt lock
with
pyrotechnic
tensioner

4

-

Seat belt stop
button

5

-

Seat belt anchor
bolt

tighten to 48 Nm (35
ft-lb)

6

-

Seat belt reel
assembly

6a

-

Seat belt anchor
end
(Sedan/Sport
Wagon models)

7

-

Bolt M8

8

-

B-pillar
cross-brace

9

-

Plastic cap

10

-

Bolt M10

tighten to 31 Nm (23
ft-lb)

11

-

Spring washer

12

-

Spacer

13

-

Seat belt anchor
bar (Coupe
only)

14

-

Cap

15

-

Grommet

16

-

Seat belt reel
mounting bolt
M10

tighten to 31 Nm (23
ft-lb)

17

-

Seat belt height
adjuster

Front seat belt reel, removing
and installing (Sedan, Coupe or
Sport Wagon models)

-

Detach battery negative (-) cable in
luggage compartment.

CAUTION!

Prior to disconnecting the battery,
read the battery disconnection
cautions given at the front of this
manual on page viii.

-

Remove front seat as described in

520 Seats

.

-

Coupe models: Working just inside
door sill.

Pry off plastic protective cap over
end of seat belt anchor bar.