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Ride Height Sensor
Posted: Wed Jul 17, 2013 3:19 pm
by TrackRat
I posted the pin out on the FB post, but here is the actual diagram from the book. Looks like only pins 1,4, and 5 are used. Leads on 1 and 5 with the wiper arm on 4. Not sure the values.
Posted: Wed Jul 17, 2013 3:23 pm
by TrackRat
Future reference, you can get all the wiring diagrams for BMW's here:
http://www.bmw-planet.com/diagrams/
Pretty handy site.
Posted: Wed Jul 17, 2013 3:31 pm
by brentp
My god. I think I just died and went to motorsports heaven. If that's accurate we have a very compelling suspension datalogging solution.
Any idea on the connector?
Posted: Wed Jul 17, 2013 3:35 pm
by TrackRat
brentp wrote:
Any idea on the connector?
Not sure on the connector. Not sure where to get that one.
Posted: Wed Jul 17, 2013 5:28 pm
by dimondjack
For record keeping the sensor is OEM part # 37140141444
Posted: Thu Jul 18, 2013 7:02 pm
by brentp
Just verified a 0.1 to 4.9v voltage swing across 90 degrees of travel, using the diagram above. Looks like we have suspension travel sensor!
Posted: Thu Jul 18, 2013 7:03 pm
by TrackRat
What was the resistance values and what did you use for the pull down?
Posted: Thu Jul 18, 2013 7:07 pm
by brentp
No resistance needed. Ignore what's in the ECU box; that's just for your reference. The device produces a variable voltage output.
Posted: Sat Aug 03, 2013 11:08 am
by GameboyRMH
Whoa nice find! These could be useful for a lot more than suspension travel too!
Posted: Sat Aug 03, 2013 7:10 pm
by brentp
They're amazing! Our new intern will be installing 4 of them on a race car and documenting the installation. Actually kind of jealous, they're that cool!
https://www.facebook.com/photo.php?fbid ... 230&type=1
Posted: Mon Mar 10, 2014 3:56 pm
by brentp
We're spinning up possbily using these sensors on a sponsored nascar vehicle. Anyone know the connector for this sensor?
Posted: Mon Mar 10, 2014 3:58 pm
by brentp
Posted: Mon Mar 10, 2014 4:16 pm
by brentp
Update. The connector does not come pins and wires. To complete the installation you would need individual wire pigtails.
61130005199 for white wire
61130006665 for red with stripe
I imagine there may be other wire color combinations available.
Evidently you will need 3 wires for GND, 5v and signal.
Posted: Fri Dec 28, 2018 7:47 pm
by iecku
Hey
Is there an update how good and reliable it works?
Posted: Fri Dec 28, 2018 11:22 pm
by brentp
While we didn't followup, these type of sensors typically work very well. It is the best, if not cheapest, option for determining ride height.