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Discussion Starter #1
Last night I was driving my 2008 smart car and had no troubles. I went to start the car in the morning and it wouldn't start; it would crank and not even try to fire.

I did the usual troubleshooting with the fuses, fuel pressure and what not. I then crawled underneath to check out the crank shaft position sensor and noticed it wasn't there. The electrical connect was intact and nothing was broken. The bold was gone and the sensor itself was gone. The bolt hole doesn't appear to be stripped either.

I'm suspecting the sensor was stolen during the night but I'm curious if there's a chance the sensor could've fallen off last night while driving and the car would run without it once it's running? The car obviously won't start without it, but if you take off the sensor while it's running will it stay running?
 

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Discussion Starter #4
Thanks. I kind of figured it had to been stolen. I still can't believe someone would do that.

I need to get a new bolt to hold the sensor in. To me it looks like an m6 thread. Any idea on how long the bolt needs to be? I ordered the Beck Arnley 180-0403 and it should be here next week.
 

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That is strange. I guess someone up there didn't want to wait a week for a part. Smarts are so far and few between here in Las Vegas, I have no idea where the closest smart is to me.
 

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Discussion Starter #6
Got the new sensor today. Beck Arnley 180-0403. Car still doesn't start or even attempt to fire. Is this the wrong part or is there something special I need to do other than bolting it in and connecting the wire plug?
 

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I would check to make sure your brake light switch is working by stepping on the brake pedal and seeing if the stoplights work. If they do, I would get some starting fluid and give it a quick shot at the air intake to see if the car will start briefly. If this is the case, check your fuel pump fuse to make sure it is good. Have you scanned for codes? If the two things I mentioned don't yield what your concern is, I would sure look for DTC's.
 

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Discussion Starter #8
All of those are good. I'm pretty sure I can hear the fuel pump kicking in when I first turn on the key. I also have pressure when I pull the line off of the fuel rail.

The whole reason I replaced the CPS was because mine was stolen. I'm thinking I got a bad part. I've rebooted the ECU about 8 times and nothing seems to help.

Thanks for the tip about the brake lights. I didn't think to check those.
 

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Discussion Starter #10
I already sent the sensor back. How would the parking brake affect it? I always start the car with the parking brake set and never have troubles. The parking brake wasn't set when I was trying today.
 

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It's obvious, but take a close look at the connector and wires. Maybe the person to whom you 'donated' the original damaged them. :|
 

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I have never replaced a crank sensor on the Fortwo, but does it need to be oriented in a certain position clockwise or counterclockwise? Does it need to be a certain distance from the reluctor on the crank? Found this article on it but it is generic and not Smart specific.

https://www.carboncleaningusa.com/crankshaft-positions-sensors/gas/smart/fortwo-1-0-l-70.

I cannot believe that someone would steal a crank sensor. What is this world coming too? Please keep us posted to the solution to your problem. DCO
 

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I cannot believe that someone would steal a crank sensor. What is this world coming too? Please keep us posted to the solution to your problem. DCO
Maybe 30 years ago a friend had an old Cadillac of his mother's in his drive. Came out the next morning to find antifreeze all over the ground. Overnight someone had stolen both radiator hoses from this old car. He lived in a respectable neighborhood where things like this just didn't happen. Who knows!
 

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Discussion Starter #15
Get a original equipment smart crank sensor. You can probably find one on ebay. Aftermarket electronics and sensors are about 90% crap. I would use a used oe sensor before I would use a aftermarket one.
That's kind of what I've been thinking. I'm going to call the Mitsubishi dealer monday and see about getting one. I don't feel like paying ~$400 for one from the smart dealer.
 

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I have never replaced a crank sensor on the Fortwo, but does it need to be oriented in a certain position clockwise or counterclockwise? Does it need to be a certain distance from the reluctor on the crank? Found this article on it but it is generic and not Smart specific.

https://www.carboncleaningusa.com/crankshaft-positions-sensors/gas/smart/fortwo-1-0-l-70.

I cannot believe that someone would steal a crank sensor. What is this world coming too? Please keep us posted to the solution to your problem. DCO
Most crank sensors have a tab for a mounting bolt and can only be installed in one orientation, including the smart. The crank sensors are either a variable reluctance pulse generator or a hall-effect sensor, most newer engine being the latter. The only ones I recall that were adjustable for air gap between the sensor and the reluctor wheel were older GM and Jeep engines. Modern machining methods pretty much eliminated that requirement.
 

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Discussion Starter #18
I'm not having any luck finding a crank sensor. Both smart and Mitsubishi say the part is on back order and have no idea when they could get it. The Mitsubishi dealer is actually more expensive than smart so if I am going to go OE then I'll just get it from smart. I'm not seeing anything on ebay either.

I'm tempted to just try another beck/arnley sensor from rockauto.
 

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Do you have the part number? Sometimes just putting that into a Google search will bring up someone who might have it that you never thought about. It doesn't happen to cross over to a Mercedes number does it?

Len
2014 EV Coupe 11,500 miles
2014 EV Cabriolet 350 miles
 

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I'm not having any luck finding a crank sensor. Both smart and Mitsubishi say the part is on back order and have no idea when they could get it. The Mitsubishi dealer is actually more expensive than smart so if I am going to go OE then I'll just get it from smart. I'm not seeing anything on ebay either.

I'm tempted to just try another beck/arnley sensor from rockauto.
I'll bet them being on backorder and price is why yours is missing.
 
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