2015JGC Oil Life numbers different than actual driven Any Help? - Jeep Garage - Jeep Forum

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Old 03-03-2016, 11:22 PM
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2015JGC Oil Life numbers different than actual driven Any Help?

Brand New 5.7 2015 No Miles/KM.

Now 8502 KM and I noticed when the engine is off and I press ON button (Dashboard give: Oil Life: 65535 KM since reset but actual KM number down) Pic attached. Never changed the oil Never been in Dealer yet.
65535 KM is for what? since I only drove 8502KM.




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Old 03-03-2016, 11:37 PM
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Re: 2015JGC Oil Life numbers different than actual driven Any Help?

This has already been posted. Your vehicle must be ON for the correct reading.
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Old 03-03-2016, 11:41 PM
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Re: 2015JGC Oil Life numbers different than actual driven Any Help?

Thanks.
When it is ON the reading is accurate. I never noticed this in other vehicle? Why 65535 KM ? I need to eliminate that this is used car sold as new.
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Old 03-04-2016, 12:33 AM
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Re: 2015JGC Oil Life numbers different than actual driven Any Help?

Quote:
Originally Posted by baktick View Post
Brand New 5.7 2015 No Miles/KM.

Now 8502 KM and I noticed when the engine is off and I press ON button (Dashboard give: Oil Life: 65535 KM since reset but actual KM number down) Pic attached. Never changed the oil Never been in Dealer yet.
65535 KM is for what? since I only drove 8502KM.




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65535 is a special number to computers. It is 2^10-1.

Ever notice how you can buy computer or phone stuff that has a capacity specification that seems to be wierd numbers? 16G iphone, 32 Gig memory card, etc. These are powers of 2. i.e. 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8191, 16384, 32768, 65536, etc.

Computers count in binary. Zeros and ones. 00000000 is Zero, 00000001 is one. 00000010 is 2, 00000011 is 3, 00000100 is 4. etc. It's like an odometer where each reel has only a 0 and a 1. In any case, when you get to 1111111111111111 ( That's 16 ones unless I fat-fingered it... ) The number in decimal or normal numbers is... Wait for it... 65535. or as high a number as you can count in binary using 16 bits ( places ) There are a number of different ways of counting that differ depending on if you need to count negative and positive numbers, but in any case, the number on your dash is a special number and will probably reset to a regular number when you change your oil - do it now and see what happens. As long as it updates I wouldn't take the number as a bad sign.

If it were indeed an odometer and it had 16 places and read 9999999999999999 and you drove it one more mile, it would roll over to 0000000000000000. So in that way you can consider the oil mileage to be -1, or 1 KM less than the roll over number of 0.

Hope the above makes sense. We use the digits 0-9 ( ten options ) because we have 10 fingers. There is a culture that in history used a different system based not on the number of fingers, but counted each finger joint. Thus where we count up to 10 with both hands, they would count up to 40 with both hands. Cool. If I can find the reference I will post it here.

FOUND IT. Ancient Mesopotamia. Google the word Sexagesimal for more information than I want to retype here. In any case it isn't 40 like I mention above but 60. This is the reason there are 60 minutes in an hour and 60 seconds in a minute in case you are wondering. A true pain in the ass - trying to calculate how many minutes between 3:45 and 7:28. Decimal time would be cool.

The time is gone, the song is over, thought I'd something more to say...






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Old 03-04-2016, 07:37 AM
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Re: 2015JGC Oil Life numbers different than actual driven Any Help?

Thanks Paul, so I shouldn't be worry thinking my JGC used by dealer and resold as new to me?
Thanks again Paul
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Old 03-04-2016, 09:50 AM
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Re: 2015JGC Oil Life numbers different than actual driven Any Help?

Ignition has to be in RUN position to give accurate numbers.
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Old 03-04-2016, 11:06 AM
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Re: 2015JGC Oil Life numbers different than actual driven Any Help?

Quote:
Originally Posted by baktick View Post
Thanks Paul, so I shouldn't be worry thinking my JGC used by dealer and resold as new to me?
Thanks again Paul
That doesn't seem likely. I would reset the oil life indicator and see what it resets to. My guess is it will operate normally. Another thing you might want to try is switch from KM to Miles and see what it says in miles. Could be the way the car converts from miles to KM internally introduces the funny number.

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