original bmw accessories.... · thorised bmw service companies. in any event, the target group for...

© BMW AG, Munich 01 29 2 287 408 07/2015 (Z/Z) 4.1 1/15

Original BMW Accessories.Installation Instructions.Rear Transport System RetrofitBMW X3 F25 LCIBMW X4 F26

Installation instructions only valid for US cars with SA 8SL (trailer tow hitch preparation).

Retrofit kit number82 11 2 287 405 Trailer tow hitch transverse pipe retrofit kit82 11 2 287 406 Trailer tow hitch wiring harness retrofit kit

Installation timeThe installation time is approx. 3 hours. This may vary depending on the condition of the car and the equip-ment in it.The installation time shown does not include any time spent on programming / coding.The calculation of the total costs for the programming time must be factored into the calculation of retrofittingcosts (no charges may be made through the warranty).

Important informationThese installation instructions are primarily designed for use within the BMW dealership organisation and by au-thorised BMW service companies.In any event, the target group for these installation instructions is specialist personnel trained on BMW cars withthe appropriate specialist knowledge.All work must be completed using the latest BMW repair manuals, wiring diagrams, servicing manuals and workinstructions, in a rational order, using the prescribed tools (special tools) and observing current health and safetyregulations.

If you experience installation or function problems, restrict troubleshooting to approx. 0.5 hours formechanical work and 1.0 hour for electrical work.To avoid unnecessary extra work and/or costs, send an inquiry straight away to the technical parts support teamvia the Aftersales Assistance Portal (ASAP).Quote the following information:– Vehicle identification number,– Retrofit kit part number,– A detailed description of the problem,– Any work already carried out.Do not archive the hard copy of these installation instructions since daily updates are provided via ASAP!

Pictograms! Denotes instructions that draw your attention to dangers.

Denotes instructions that draw your attention to special features.

Denotes the end of the instruction or other text.

© BMW AG, Munich 01 29 2 287 408 07/2015 (Z/Z) 4.1 2/15

Installation informationEnsure that the cables and/or lines are not kinked or damaged as you install them in the car. Costs arising fromthis will not be reimbursed by BMW AG.Additional cables/wires that you install must be secured with cable ties. If the specified PIN chambers are occu-pied, bridges, double crimps or twin-lead terminals must be used.After the installation work, the retrofit must be programmed / coded via the – Conversions – path.

Ordering instructionsThe following parts are not supplied in the retrofit kit and must be ordered separately (see EPC for part numberand details):– NAS receiver G– Control unit holder H– M12 hexagon nut I

List of special equipmentThe following special equipment must be taken into consideration when installing the retrofit kitSA 8SL Trailer tow hitch preparation

Special tools requiredDetails of the special tool required can be found in the relevant ISTA repair manual.

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Section Page1. Parts list for retrofit kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2. Preparatory work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3. Retrofit wiring harness connection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4. Installation and cabling diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5. Installing the rear transport system, routing and connecting the retrofit wiring harness . . . . . . . . . . . . . . 8

6. Concluding work and coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7. Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

8. Customer information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

1. Parts list for retrofit kit

© BMW AG, Munich 01 29 2 287 408 07/2015 (Z/Z) 4.1 4/15

A B

F G H I

C

ED

KJ L M P QON

025 0341 Z

LegendA Retrofit wiring harness part list (1)B Retrofit wiring harness part list (2)C Transverse pipeD Control unitE SocketF Cable tie (10 x)G NAS receiver (not supplied in the retrofit kit)H Control unit holder (not supplied in the retrofit kit)I M12 hexagon nut (4 x, not supplied in the retrofit kit)J SleeveK Socket holderL M6 hexagon screw (2 x)M M6 hexagon nut (2 x)N Spacer bush (2 x)O M6 hexagon screw (3 x)P M12 hexagon nut (3 x)Q SW 6-pin plug casing

2. Preparatory work

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ISTA No.

Disconnect the negative terminal of the battery 61 20 900

The following components must be removed first of allRear bumper trim 51 12 156Guide for rear bumper 51 12 825Rear bumper trim support 51 12 050Luggage compartment floor trim 51 47 102Right luggage compartment wheel arch trim 51 47 161Unfasten rear right fuse box ---

3. Retrofit wiring harness connection diagram

© BMW AG, Munich 01 29 2 287 408 07/2015 (Z/Z) 4.1 6/15

A5 A6

A4A9

A

B

B2-B7

A10

A11

A8

A7

B1

A1

A2

A3

025 0342 Z

Item Designation Signal Cable colour/cross-section

Connection location in the car Abbreviation/slot

A Retrofit cable part piece (1) --- --- --- ---A1 SW 24-pin socket casing --- --- To control unit D ---A2 SW 10-pin socket casing --- --- To control unit D ---A3 SW 6-pin socket casing --- --- To control unit D ---A4 SW 6-pin socket casing --- --- Connect to plug casing Q on retrofit wiring har-

ness B ---

A5 M6 ring eyelet Terminal 31 BR 2.50 mm²

Screw onto rear right ground support point Z10*14B

A6 M6 ring eyelet Terminal 31 BR 2.50 mm²

Screw onto rear right ground support point Z10*14B

A7 SW 4-pin plug casing --- --- Connect to the trailer tow hitch preparationplug behind rear right fuse box Z2

X18*1B

A8 Socket contact Termi-nal 30F

RT/BL 2.50 mm²

To rear right fuse box Z2 Z2*5BPIN 3

A9 Socket contact Termi-nal 30B

RT/GE2.50 mm²

To rear right fuse box Z2 Z2*1BPIN 1

A10 SW 3-pin socket casing B-CAN --- To rear right CAN ring cable ---A11 SW 3-pin plug casing B-CAN --- To rear right CAN ring cable ---

B Retrofit wiring harness part list (2) --- --- --- ---B1 SW 7-pin socket casing --- --- To socket E ---B2 Plug contact 49AL BL/RT

0.75 mm²Connect to plug casing Q PIN 1

B3 Plug contact Terminal 31 BR 2.50 mm²

Connect to plug casing Q PIN 2

B4 Plug contact 49AR BL/GE 0.75 mm²


B5 Plug contact Termi-nal 30B

RT/BL 2.5 mm²


B6 Plug contact 58AR GR/RT 0.75 mm²


B7 Plug contact RSA GE/BL0.75 mm²


4. Installation and cabling diagram

© BMW AG, Munich 01 29 2 287 408 07/2015 (Z/Z) 4.1 7/15

5

1

4

DE

23

A

B

025 0337 Z

A Retrofit wiring harness part list (1)B Retrofit wiring harness part list (2)D Control unitE Socket

1 Trailer tow hitch preparation plug X18*1B2 Rear right fuse box Z2, plugs Z2*1B, Z2*5B3 Ground support point Z10*14B4 Rubber grommet5 CAN ring cable plug

5. Installing the rear transport system, routing and connecting the retrofit wiring harness

© BMW AG, Munich 01 29 2 287 408 07/2015 (Z/Z) 4.1 8/15

025 0325 Z

J

O

P

N

M

LK

C

Note the tightening torque value: 120 Nm

Assemble the rear transport system as follows:- Screw sleeve J with hexagon screws O and hexa-gon nuts P onto transverse pipe C- Screw socket K with hexagon screws L, spacerbushes N and hexagon nuts M onto transverse pipeC

12

B2-B7

025 0326 Z

! When drilling through the rubber grommet (1),take care not to damage parts behind it.

Drill a hole (2) in the rubber grommet (1) with a 9 mmdrill bit.Route branches B2-B7 of retrofit wiring harness Bthrough the rubber grommet (1) into the interior ofthe car.Seal the drill hole.

C

II

E

K

025 0327 Z

Note the tightening torque value of 108 Nm.

Screw on transverse pipe C with hexagon nuts I.Clip socket E to socket holder K.

EB1 025 0328 Z

Connect branch B1, SW 7-pin socket casing, tosocket E.


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CB

F

025 0329 Z

Secure retrofit wiring harness B to transverse pipe Cusing cable tie F.

A4

B2-B7

Q

025 0330 Z

Connect branches B2–B7 as follows to plug casingQ:– Branch B2, BL/RT cable, to PIN 1– Branch B3, BR cable, to PIN 2– Branch B4, BL/GE cable, to PIN 3– Branch B5, RT/BL cable, to PIN 4– Branch B6, GR/RT cable, to PIN 5– Branch B7, GE/BL cable, to PIN 6

D

HA3A2A1

025 0331 Z

Place control unit holder H in the luggage compart-ment.Insert control unit D into control unit holder H.Connect branches A1–A3 to control unit D.

A4

Click

Q

025 0332 Z

Connect branch A4, SW 6-pin, to plug casing Q.


© BMW AG, Munich 01 29 2 287 408 07/2015 (Z/Z) 4.1 10/15

X18*1B

A7

Click

025 0333 Z

Connect branch A7, SW 4-pin plug casing, to stan-dard car plug X18*1B, SW 4-pin socket casing.

1

3

1

A8-A9Z2*5B

Z2*1B 025 0334 Z

Fuses can fall out when connecting plugs to rearright fuse box (1). Ensure that all the fuses arereplaced in their correct position.

Route branches A8–A9 to the rear right fuse box andconnect as follows:– Branch A8, RT/BL cable, to PIN 3 of plug Z2*5B,

GR 10+5-pin socket casing– Branch A9, RT/GE cable, to PIN 1 of plug Z2*1B,

SW 7-pin socket casing

A10A11

1

025 0338 Z

Release the plug connection of the CAN ring cable(1).Connect branch A10-A11 to the CAN ring cable (1)at the rear right.

Z10*14B

A5-A6

025 0335 Z

Screw branch A5-A6 to ground support pointZ10*14B in the rear right wheel arch.


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1 2025 0336 Z

Cut out the section (1) on the rear centre cover (2) asshown.

6. Concluding work and coding

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The retrofit system requires programming / coding.– Connect the battery– Connect the battery charger to the car– Connect the car to the ISTA workshop system– Call up the ISTA/P car programming facility– If using ISTA/P, please note the instructions provided in the ISTA/P application documentation– Select the "Removable trailer tow hitch" retrofit using the – Conversions – path and work through the action

plan created– If necessary, carry out a car test using the ISTA system and note or work through any entered error memory– Conduct a function test– Re-assemble the car in a logical manner– Give the customer the customer information

7. Wiring diagram

© BMW AG, Munich 01 29 2 287 408 07/2015 (Z/Z) 4.1 13/15

D*

E*B1*

A5/A6*Z10*14B

A7*X18*1B

A3*

2,5 RTSW

0,5 SWGE

0,5 GN

30F_

F19_

vBF

BL_M

BL_M

FRA_

HRFR

A_HR

3 A8*A9*Z2*1B Z2*5B

2,5 RTBL

Z2

2,5 RTGE

F144

20 A

MIN

I

A10* A11*

B-CA

N_H

B-CA

N_H

B-CA

N_H

B-CA

N_L

B-CA

N_L

B-CA

N_L

0,35 GERT

0,35 GEBR

0,35 GERT

0,35 GEBR

A3*A2*

0,75 BLRT

2,5 BR

0,75 BLGE

2,5 RTBL

0,75 GRRT

0,75 GEGN

0,75 BLRT

2,5 BR

0,75 BLGE

2,5 RTBL

0,75 GRRT

0,75 GEGN

49AL

49AL

49AL

49AL

Kl. 3

1Kl

. 31

Kl. 3

1

49AR

49AR

49AR

49AR

Kl. 3

0Kl

. 30

Kl. 3

0

58AR

58AR

58AR

58AR

A3*

7

Q*A4*

24 18 15 19 A1*

RSA

RSA

RSA

RSA

2,5 BR

2,5 BR

2 8 3 44

1 2 1 2

3

2

B*

A*

1

025 0340 Z

LegendA1* SW 24-pin socket casing, to control unit DA2* SW 10-pin socket casing, to control unit D*A3* SW 6-pin socket casing, to control unit D*A4* SW 6-pin socket casing to plug casing Q* of retrofit wiring harness B*A5* M6 ring eyelet, to rear right round support point Z10*8BA6* M6 ring eyelet, to rear right round support point Z10*8BA7* SW 4-pin plug casing, to trailer tow hitch preparation plug X18*1BA8* Socket contact, to rear right fuse box Z2A9* Socket contact, to rear right fuse box Z2A10* SW 3-pin socket casing, to rear right CAN ring cableA11* SW 3-pin plug casing, to rear right CAN ring cable

B1* SW 7-pin socket casing to socket E*

A* Retrofit wiring harness part list (1)B* Retrofit wiring harness part list (2)D* Control unitE* SocketQ* SW 6-pin plug casing

X18*1B SW 4-pin socket casingZ2*1B GR 10+5-pin socket casingZ2*5B SW 7-pin socket casingZ10*14B Ground support point on rear right wheel arch

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

7. Wiring diagram

© BMW AG, Munich 01 29 2 287 408 07/2015 (Z/Z) 4.1 14/15

Cable coloursBL Blue GR Grey RT RedBO Bordeaux (Burgundy) L-GN Light green SW BlackBR Brown NT Natural TR TransparentGE Yellow OR Orange VI VioletGN Green RO Pink WS White

8. Customer information

© BMW AG, Munich 01 29 2 287 408 07/2015 (Z/Z) 4.1 15/15

1

025 0339 Z

Securely stow the NAS receiver in the lower storagespace floor of your car when not in use.

Note for cars with Smart Opener

The rear transport system can impair the function of the Smart Opener.

original bmw accessories.... · thorised bmw service companies. in any event, the target group for...

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