smart diagnostics?

[Turbo42]

The car is run by the cumputer its an electrical failure

[Bad-Tat]

Just went thru this with Smart of Buckhead. Regulated power supply for Ham Radio was feeding voltage to the CanBus system when it was doing it's check on start up. Waiting to see what Icom has to say about this.

[Turbo42]

exactly and his check engine light was throwing CAN codes

[TMACK]

Whoa. I'd have never suspected. Would not some sort of DC filter help out here?

[tvengineer]

Originally Posted by Bad-Tat

Just went thru this with Smart of Buckhead. Regulated power supply for Ham Radio was feeding voltage to the CanBus system when it was doing it's check on start up. Waiting to see what Icom has to say about this.

Hmmmm... so... putting voltage into the ACC socket while the SAM is doing its check on startup will cause this code????
SO.. hook up a big capacitor (or plug something in with a capacitor accross its input) and you get a Check Engine LIght????

Might have to try that for myself... I have left an inverter plugged in with no problem.. and that has a LARGE input filter cap....

Weird

[smartSEATTLE]

Originally Posted by Wdhitch

I wondered if you had your hands in this.... Why didn't they just replace the computer? Wouldn't that have solved the problem? I know it's probably not that easy but figured I'd ask...

Yes this is correct. We are seeing the same thing here in Seattle area. Any device that has some sort of a battery back up in it that is left pluged in can cause this. I say can as it does not mean it will. Right now smart is aware of the issue and they are working on a fix.

From talking with DTAC the problem is due to the shut down process and the order that the control modules turn off.

So far have seen GPS, PDA style phones (some not all), and a satellite radio receiver set the codes in mention.

[TMACK]

Very, very interesting.
So, bottom line, remove all self-powered devices from the PO prior to shut down?

[fastturb]

let's be careful here or there will be more "reasons" for people to complain about and put-down the smart. I have a Garmin plugged in my smart for weeks. Some days I turn it off when it asks and others I don't. I have put multiple ACC plug adapters in and had gps, phone charger AND XML radio all plugged in at the same time or individually. NO PROBLEMS.

[TMACK]

Originally Posted by fastturb

let's be careful here or there will be more "reasons" for people to complain about and put-down the smart. I have a Gramin plugged in my smart for weeks. Some days I turn it off when it asks and others I don't. I have put multiple ACC plug adapters in and had gps, phone charger AND XML radio all plugged in at the same time or individually. NO PROBLEMS.

Not trying to fuel any Smart resentment, just trying to understand a very perplexing technical issue; the more we, the Forum, address specific instances, (as you just did, by the way, in response to my probe), the better off the community.

[trfellows]

I had a similar situation involving my MAXX 400W inverter plugged into the power port.

I was traveling and my son was using the inverter to keep his phone charged. I'm not sure when exactly the check engine light would come on or when it turned off but at the time it seemed to be intermittent. When I got home I plugged into the OBDII port and got U0002 fault code. I had unpluged the inverter and put it away after the trip and reset the fault code to see if it would return. I've been driving two months now since it happened and haven't experienced any more fault codes.