Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

EBA – 01 29 0 146 394
BMW Installation Instructions
Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

The installation time is approx. 3.5 – 4 hours, but this may vary depending on the condition of the car and the equipment in it.

Retrofit kit No. 82 30 0 142 076

Contents

Section

Important information
1. Preparations
2. Parts list
3. Retrofit wiring harness connection diagram
4. Installation and cabling diagram
5. To install and connect the power supply wiring harness
6. To install and connect the blower motors
7. Concluding work
8. Circuit diagram E38

Important information

The retrofit kit is for use within the BMW dealership organisation only.

The installation work is shown for a basic seat in model series E38, on the driver’s side (LHD).

Proceed in the same way on sport, deluxe and passenger seats.

Do not kink or damage the cables during the installation work since otherwise they may cause faults that can later only be identified by extensive additional work. The costs incurred as a result of this will not be reimbursed by BMW.

If the specified PIN chambers are occupied, bridges, double crimps or twin-lead terminals must be used.

This system does not require coding

Ordering instructions

The seat and backrest covers must be ordered separately in the appropriate colours (see EPC for part numbers).

Target group

The target group for these installation instructions is specialist personnel trained on BMW cars with specialist knowledge of vehicle electrical systems.

Work:

All servicing, repair and installation work on BMW cars is completed at your own risk. All work is to be carried out using current BMW

– Repair manuals – Circuit diagrams in a rational order using the prescribed tools (special tools) and observing current health and safety regulations.

Special tools required
DIS or MoDiC
Universal knife with a long blade
Drill
Set of twist drill bits
Flat file
BMW rubber profile adhesive (part number: 82 22 9 407 524)

Pliers (52 00 50), for securing the clips

1.Preparations

TIS instruction No.
Refer to the safety instructions for handling components of the airbag system. 32 34 …
Conduct a brief test
Disconnect the negative pole of the battery 12 00 …
The following components must be removed first of all:
Glove compartment 51 16 360
Driver or passenger seat 52 13 000
Support for the front seat 52 14 415
Support for the backrest 52 14 420
Gearshift lever cover

Before you dismantle the seats, it is recommended that you define where the seat ventilation switch is to be installed. Select the installation position of the seat ventilation switch depending on the seat variant, ensuring that it cannot be damaged by moving parts of the seat.

2.Parts list

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

  1. Blower motor (8x)
  2. Toggle switch
  3. Power supply wiring harness
  4. Seat wiring harness
  5. Backrest wiring harness
  6. Backrest cover with microperforations
  7. Seat cover with microperforations

3.Retrofit wiring harness connection diagram

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

Branch Description Signal Cable colour /

Cross-section

Connection location in the car Abbreviation / Slot
A Power supply wiring harness
A1 SW 2-pin plug On seat wiring harness, branchB1 X13528
A2 Joint connector contact Terminal 31 BR

0.75 mm2

In the joint connector behind the glove compartment X13003
A3 Cable branch Terminal R VI

0.75 mm2

Use miniature connector to connect to VI/ WS cable on joint connector behind glove compartment X1264
B Seat wiring harness
B1 SW 2-pin plug On power supply wiring harness, branchA1 X13528
B2 Blade terminal contact Terminal 15 VI

0.75 mm2

On the toggle switch X3158

PIN 1

B3 Blade terminal contact Terminal 15 VI

0.75 mm2

On the toggle switch X3472

PIN 2

 

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

Branch Description Signal Cable colour /

Cross-section

Connection location in the car Abbreviation / Slot
B4 SW 3-pin plug On seat blower motor X13673
B5 SW 3-pin plug On seat blower motor X13674
B6 SW 3-pin plug On seat blower motor X13675
B7 SW 3-pin plug On seat blower motor X13676
B8 WS 3-pin plug On backrest wiring harness, branchC1 X13530
C Backrest wiring harness
C1 WS 3-pin plug On seat wiring harness, branchB8 X13530
C2 SW 3-pin plug On backrest blower motor X13669
C3 SW 3-pin plug On backrest blower motor X13670
C4 SW 3-pin plug On backrest blower motor X13671
C5 SW 3-pin plug On backrest blower motor X13672

4.Installation and cabling diagram

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

Legend

  1. Joint connector X13003 / X1264
  2. Power supply wiring harness
  3. Seat blower motor (4x)
  4. Backrest blower motor (4x)
  5. Backrest wiring harness
  6. Seat wiring harness
  7. Toggle switch

5.To install and connect the power supply wiring harness

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

[1] Connect branch A2, BR cable, to joint connector X13003, BR cable.

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

[2] Connect branch A3, VI cable to VI/SW cable from joint connector X1264, VI/WS cable, using a miniature connector (1).

All cars

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

Route branch A1 under the centre console (1) to the seat.

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

Route branch A1 under the carpet (1) to the seat.

6.To install and connect the blower motors

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

[3] Position the blower motors (1) as shown on the backrest padding (2) and mark the contours.

Cut out the backrest padding (2) accordingly in a cylindrical shape.

Affix the blower motors (1) flush with the surface.

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

[4] Cut cone-shaped pieces (2) out of the foam cylinders (1) you cut out earlier.

Seal all passive ventilation holes (3) with foam cones (2).

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

Pull the trimming wires (1) out of the old backrest cover and insert them into the new backrest cover (2).

Fit the new backrest cover (2) on to the backrest padding and seat frame.

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

Install wiring harness C as shown in the backrest frame (1) and connect branches C2 – C5 to the blower motors.

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

On passenger seats the blower motors must be positioned in the cavities in the seat occupation mat.

Position the blower motors (1) as shown on the backrest padding (2) and mark the contours.

Cut out the seat padding (2) accordingly in a cylindrical shape. Affix the blower motors (1) flush with the surface.

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

Cut cone-shaped pieces (2) out of the foam cylinders (1) you cut out earlier.

Seal all passive ventilation holes (3) with foam cones (2).

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

Pull the trimming wires (1) out of the old seat cover and insert them into the new seat cover (2).

Fit the new seat cover (2) on to the seat padding and seat frame.

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

Install wiring harness B as shown in the seat frame (1) and connect branches B4 – B7 to the blower motors.

Connect branch B8 to branch C1.

Secure wiring harness B to the seat frame (1) with cable ties.

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

Select the position of the seat ventilation switch depending on the seat variant, ensuring that it

cannot be damaged by moving parts of the seat. The illustration shows the recommended position on the sport seat.

Mark the seat trim (1) and cut out the marked area (2).

Dimension a:19.5 mm Dimension b: 6.8 mm

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

Thread branches B2 – B3 through the seat trim (1) and connect the toggle switch (2).

Clip the toggle switch (2) into the seat trim (1).

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

Connect branch A1 to branch B1.

Secure the plug connection A1/B1 to the seat isolation switch (1) using a cable tie.

7.Concluding work

  • This system does not require coding
  • Assemble the car following the instructions to dismantle it in reverse order
  • Conduct a brief test
  • Conduct a function test

8.Circuit diagram BMW E38

Active Seat Ventilation System Retrofit Kit BMW 7 Series (E38)

Legend

S1* Toggle switch
M160 Backrest blower motor
M161 Backrest blower motor
M162 Backrest blower motor
M163 Backrest blower motor
M164 Seat blower motor
M165 Seat blower motor
M166 Seat blower motor
M167 Seat blower motor
X1219 Joint connector terminal R
X3158 Toggle switch
X3368 Terminal R connector
X3369 Terminal R connector
X3472 Toggle switch
X13003 Terminal 31 joint connector
X13528 SW 2-pin plug
X13530 WS 3-pin plug
X13669 SW 3-pin plug, backrest blower motor
X13670 SW 3-pin plug, backrest blower motor
X13671 SW 3-pin plug, backrest blower motor
X13672 SW 3-pin plug, backrest blower motor
X13673 SW 3-pin plug, seat blower motor
X13674 SW 3-pin plug, seat blower motor
X13675 SW 3-pin plug, seat blower motor
X13676 SW 3-pin plug, seat blower motor
X18750 Terminal 30 connector
X18751 Terminal 30 connector
Y1* Miniature connector
Y2* To standard wiring harness

All the designations marked with an asterisk (*) apply only to these installation instructions or this circuit diagram.

Cable colours
SW black
VI violet
WS white
BR brown

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