How quickly will I get access to the wiring diagrams after payment?

Access is activated instantly after a successful payment. A payment receipt and an activation email with a link to the wiring diagrams will be sent to your email.

How long will my access be valid?

Access is activated permanently and is not limited in time, just like if you purchased a physical book.

Where can I find the wiring diagrams I purchased?

In your personal account. To access it, click the user icon in the upper right corner of the website.

What if the wiring diagrams do not match my car model?

This is very rare, but if the diagrams do not match your vehicle, contact us at support@portal-diagnostov.com and attach a few photos of the connector or wiring that does not match. We will issue a refund.

Power Seats — BMW 640i 2012 Wiring Diagram

POWER SEATS

Front Heated Seats Wiring Diagram for BMW 640i 2012

List of elements for Front Heated Seats Wiring Diagram for BMW 640i 2012:

Bus sig
Central gateway module (left end of dash)
Computer data lines system
Dr seat backrest
Dr seat cushion
Driver's seat backrest heating element (in driver's seat back)
Driver's seat cushion heating element (in driver's seat cushion)
Driver's seat module (convertible: under driver's seat) (coupe: side of driver's seat)
Fuse 30a
Fuse 7.5a
Gnd
Heating/air conditioning system (center of dash)
Hot w/ bistable relay energized
Hot w/ terminal 30b relay energized
Junction box
Junction box electronics
Pass seat backrest
Pass seat cushion
Passenger's seat backrest heating element (in front passenger's seat backrest)
Passenger's seat cushion heating element (in front passenger's seat cushion)
Passenger's seat module (convertible: under passenger's seat) (coupe: side of passenger's seat)
Pwr sply
Sig temp sens
Volt sply
W/ 2-circuit seat heating
X12 1b
X14 1b
Z10 5b (left kick panel)
Z10 6b (right kick panel)

Front Lumbar Wiring Diagram, with Active Seats for BMW 640i 2012

List of elements for Front Lumbar Wiring Diagram, with Active Seats for BMW 640i 2012:

(left kick panel) z10 5b
(right kick panel) z10 6b
(top of
Bus sig
Cam operated mot
Cam sw sig
Computer data lines system
Driver active seat pressure distributor
Driver active seat pressure distributor 2
Driver lumbar support-active seat drive unit
Driver's lumbar support valve block
Driver's seat back)
Driver's seat module (convertible: under driver's seat) (coupe: side of driver's seat)
Driver's side seat adjustment switch cluster
Front passenger active seat pressure distributor 2
Front passenger lumbar support-active seat drive unit
Fuse 10a
Fuse 30a
Gnd
Hot w/ terminal 30b relay energized
Junction box
Lum sup active
Lum sup gnd
Lum sup vlv 1
Lum sup vlv 2
Lum sup vlv 3
Lum sup vlv 4
Lum sup volt
Passenger active seat pressure distributor
Passenger's lumbar support valve block (top of front
Passenger's seat back)
Passenger's seat module (convertible: under passenger's seat) (coupe: side of passenger's seat)
Passenger's side seat adjustment switch cluster
Pressure gnd
Pwr sply
Red
Valve 1
Valve 2
Valve 3
Valve 4
Vlv block gnd
X12 1b
X14 1b
Z10 5b (left kick panel)
Z10 6b (right kick panel)

Front Lumbar Wiring Diagram, without Active Seats for BMW 640i 2012

List of elements for Front Lumbar Wiring Diagram, without Active Seats for BMW 640i 2012:

(left kick panel)
Driver's lumbar support valve block (top of driver's seat back)
Driver's seat lumbar support drive
Driver's side seat adjustment switch cluster
Fuse 10a
Hot w/ terminal 30b relay energized
Junction box
Passenger's lumbar support valve block (top of front passenger's seat back)
Passenger's seat lumbar support drive
Passenger's side seat adjustment switch cluster
Red
X12 1b
X14 1b
Z10 5b
Z10 5b (left kick panel)
Z10 6b (right kick panel)

Front Seat Ventilation Wiring Diagram (1 of 2) for BMW 640i 2012

List of elements for Front Seat Ventilation Wiring Diagram (1 of 2) for BMW 640i 2012:

Back act fan
Back gnd fan
Bus sig
Central gateway module (left end of dash)
Computer data lines system
Driver's seat backrest fan 1
Driver's seat backrest fan 2
Driver's seat backrest fan 3
Driver's seat backrest fan 4
Driver's seat cushion fan 1
Driver's seat cushion fan 2
Driver's seat cushion fan 3
Driver's seat cushion fan 4
Driver's seat module (convertible: under driver's seat) (coupe: side of driver's seat)
Fuse 30a
Fuse 7.5a
Gnd
Heating/ air conditioning system (center of dash)
Hot w/ bistable relay energized
Hot w/ terminal 30b relay energized
Junction box
Junction box electronics
Pwr sply
Red
Seat act fan
Seat gnd fan
Volt sply
X12 1b
X127 1b
X128 1b
X14 1b
Z10 5b (left kick panel)

Front Seat Ventilation Wiring Diagram (2 of 2) for BMW 640i 2012

List of elements for Front Seat Ventilation Wiring Diagram (2 of 2) for BMW 640i 2012:

Back act fan
Back gnd fan
Bus sig
Gnd
Passenger's seat backrest fan 1
Passenger's seat backrest fan 2
Passenger's seat backrest fan 3
Passenger's seat backrest fan 4
Passenger's seat cushion fan 1
Passenger's seat cushion fan 2
Passenger's seat cushion fan 3
Passenger's seat cushion fan 4
Passenger's seat module (convertible: under passenger's seat) (coupe: side of passenger's seat)
Pwr sply
Red
Seat act fan
Seat gnd fan
Volt sply
X12 1b
X129 1b
X130 1b
Z10 6b (right kick panel)

Heated Steering Wheel Wiring Diagram for BMW 640i 2012

List of elements for Heated Steering Wheel Wiring Diagram for BMW 640i 2012:

10b
Ausw
Bwmbfi
Fuse 10a
Gnd
Horn button
Hot w/ terminal 15n relay energized
Junction box
Junction box electronics
Left steering wheel multi-function switch block
Lhz+
Lhz-
Nca
Raendel
Red
Right steering steering wheel module
Right steering wheel multi-function switch block
Sply
Steering column switch cluster
Steering wheel heater
Steering wheel heater & steering column adjustment switch
T_lhz+
T_lhz-
Vibration activator

POWER SEATS – BMW 640i 2012 – SYSTEM WIRING DIAGRAMS