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Clutch Safety Switch Bypass?

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Old Jun 11, 2024 | 04:44 PM
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Clutch Safety Switch Bypass?

In the past, there have been problems and discussions about the clutch safety switch but I've yet to find anyone who's come up with a way to bypass it. There's a YouTube of someone who's done it on an e46 that uses the same Hall effect switch.
He shows how to splice two wires that go into the four wire connector to the switch. I'd like to bypass mine so I can use a thicker clutch pedal stop. If you try to use too thick a stop, it won't allow the clutch master cylinder to actuate the clutch safety switch. Anyone with electrical skills smart enough to figure out if this will work and which wires to splice?
 
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Old Jun 11, 2024 | 05:16 PM
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I’ve never looked closely at the switch. Is there a problem with physical contact, and if so, is it something that can just be zip-tied up out of the way? Edit: I just realized that you’re saying the pedal won’t travel far enough, so I assume contact shouldn’t be an issue. This is what I get for responding when I’m tired.

You can code the switch out in software. I did it with my car because I was tired of always having to step on the clutch to start the car. I’m used to vehicles that don’t require that. It even retains cruise if you have it, though you’d need to remember not to step on the clutch before disengaging it.

edit, part deux: It’s in the EWS module. The first option I see is park/neutral_eingang. That’s what you want to disable.
 

Last edited by deepgrey; Jun 11, 2024 at 06:04 PM. Reason: Fatigue.
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Old Jun 11, 2024 | 06:10 PM
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NC TRACKRAT
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All well and good if you're software savvy and a "techie". I'm an old geezer who can barely keep my laptop and cell phone working. I can, however, splice wires together if I know which ones.
 
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Old Jun 11, 2024 | 07:37 PM
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I'm not going to be much use tonight as tired as I am, but here's the relevant part of the wiring diagram. You've got power and ground to the switch, and then a wire from the EWS to the switch and a wire from the DME to the switch. I would guess that the EWS is looking for a signal on that blue/black wire for clutch status, but whether it's being pulled high or low, I have no idea. Probably best to backprobe the connector if you can't find more on it in the manual somewhere. I don't currently have my Bentley here to check if it says anything.

 
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Old Jun 12, 2024 | 06:24 PM
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very easy to code out in ncsexpert/ncsdummy if you are at VIR with bmw in a couple weeks I can do it for you. I'll have two R53s there for that event
 
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Old Jun 12, 2024 | 06:38 PM
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I'll be there and will most definitely take you up on that offer! Many thanks! (sending you an e-mail, too)
 
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