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BMW 3-Series (E90 E92) Forum
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Service Engine Soon light timestamp?
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| 02-27-2014, 11:42 AM | #1 |
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Service Engine Soon light timestamp?
Quick question... if I've had an SES light for a couple of days now can the code reader tell when the light first turned on or does it just provide the information regarding the fault?
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| 02-27-2014, 05:08 PM | #3 |
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resident girl.
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Are you referring to whether the dealership can see this, or whether a regular code reader has this feature? Cobb does not have this feature -- only shows present and stored fault codes. Whether the dealership's computer can see more info or not, I'm not sure. I imagine it's possible.
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| 02-27-2014, 05:19 PM | #4 |
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First Lieutenant
 
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Normal code readers don't do that ! And I doubt the dealer's code reader can do it !
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| 02-27-2014, 06:00 PM | #6 | |
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Yeah i'd be surprised if BMW's DIS couldnt do this.
Quote:
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| 02-27-2014, 06:31 PM | #7 |
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Private First Class
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The Bav Tech tool displays the mileage and engine conditions at the time of a fault. It shows things like temp and engine RPMs. I don't remember if it shows the actual time or not.
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| 02-27-2014, 07:03 PM | #8 |
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packet jockey
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Ok, it doesn't show a time stamp but does show the miles driven and warm ups since
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| 02-27-2014, 07:50 PM | #9 |
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Colonel
 
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The codes I pull from my car using INPA I believe has a time stamp with mileage. I'll look into this....(When spring comes)
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| 02-27-2014, 08:22 PM | #10 | |
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This is what i was thinking BMW's INPA/DIS has LOTS of info. Someone will have to double check if there's a time but im like 99% sure there's mileage.
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| 02-28-2014, 05:56 AM | #13 |
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General
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The BT Scan tool records mileage of when a fault code event happens. OBDII Scan tools will report the mileage. OBDII code readers usually do not (there is a difference between OBDII scan tools and readers).
The mileage data is stored in the ECU as part of the OBDII protocol; dates of the event are not because it is not relevant to determining how to effect a repair. |
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| 02-28-2014, 09:00 AM | #14 |
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First Lieutenant
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yeah the data's there. When I was fighting the dealer about cold start misfires, they tried to bs ing me with "the codes could have happened anytime" so I showed them the snapshot from the BT tool showing mileage, rpm and coolant temp of each misfire fault showing it happened while cold. they were like "ummm". Then I get a call later saying their equipment confirmed the engine parameters when the misfires occurred.
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