VW Electromechanical Power Steering Rack

2026-03-19T10:32:08Z

Jelle IV: added link to 3d scan of comparable steering rack

VW and other VAG group Vehicles prior to switching to an electric steering column for assist had an electrically assisted steering rack. Golf MK5 for example.
{| class="wikitable"
|+
!Part Number
!Generation
!Vehicle
!Market
|-
|1K1 909 144 L
|MK5
|VW Golf
|LHD
|-
|1K2 909 144 F
|MK5
|VW Golf
|RHD
|}
{{DISPLAYTITLE:VW Electromechanical Power Steering Rack}}
[[File:VW electric steering rack.jpg|none|thumb]]

=== Wiring ===
The rack can be used in failsafe mode simply by providing power to the unit as follows:

* There's a 2 pin connector with beefy pins: connect pin 2 to a permanent 12V though an 80 amp fuse, connect pin 1 to ground. Enable the rack though a switched/ignition 12V feed (10A fuse) to pin 4 (EN) of the smaller data connector.

If you want to use dynamic assist levels, you'll need to connect pin 1 to CAN-L and pin 2 to CAN-H, and send out the RPM on 0x280 where Bytes 2 and 3 are RPM*4. This must be above 600 for it to provide assistance.

The rack broadcasts 0x3D0 and 0x3D2
[[File:Rack Pins.jpg|thumb|Rack Pins|none]]

===Column===
1K1 419 502 xx (LHD) and 1K2 419 502 xx (RHD) are compatible VAG columns. The part number seems to cover a variety of models from 1999 through 2018, and perhaps even later. The "xx" denotes a few variations in mounting, but the coupling to the rack as well as the steering wheel mount, should all be the same.

'''3D-model'''

A 3d scan of a comparable column (VAG 1K1 423 051 EK) can be found here: https://grabcad.com/library/volkswagen-steering-rack-1

[[Category:VAG]]
[[Category:Power Steering]]

{{DEFAULTSORT:VW_Electromechanical_powersteering_rack}}

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VW Electromechanical Power Steering Rack