computer MPG never changes

nbaker · 03-21-2008, 02:10 PM

My wife owns a 2006 Prius which she is in love with.
For the last three gas fillups the computer showes that she is getting 41.6 MPG constantly. It never changes. No mater if you have gone 1 mile or 400 miles. The MPG is going back to zero when the car is filled up and I have manually reset it. Yesterday she had gone 2 miles and the MPG was showing 41.6. I know that this is impossible. Is this a computer problem or something I can correct? I need help soon as the warrenty is close to running out.

Prius 07 · 03-21-2008, 03:11 PM

Quote:

Originally Posted by nbaker

My wife owns a 2006 Prius which she is in love with.
For the last three gas fillups the computer showes that she is getting 41.6 MPG constantly. It never changes. No mater if you have gone 1 mile or 400 miles. The MPG is going back to zero when the car is filled up and I have manually reset it. Yesterday she had gone 2 miles and the MPG was showing 41.6. I know that this is impossible. Is this a computer problem or something I can correct? I need help soon as the warrenty is close to running out.

It does sound like that there is a problem with the mpg MFD display if it keeps showing the same number. Does it go to zero automatically after a fill-up or do you press the reset button. If you haven't already done so press the reset button and see if the 41.6 showing goes to 0 and maybe the press of reset fixes it. Keep trying this a few times if it doesn't reset properly and if it still doesn't then take it to the dealer.
If it was my car I would let the dealer know either way since you are so close to the expiry of your warranty. That way you registered the problem with Toyota and have some leverage if the problem persists after the warranty expired.
Best of luck,
Gabe

qbee42 · 03-21-2008, 04:02 PM

With the 2006 the mpg does not reset automatically when you fill up. You have to press reset.

Tom

Patrick Wong · 03-21-2008, 04:12 PM

Quote:

Originally Posted by nbaker

...For the last three gas fillups the computer showes that she is getting 41.6 MPG constantly. It never changes. No mater if you have gone 1 mile or 400 miles. The MPG is going back to zero when the car is filled up and I have manually reset it...Is this a computer problem or something I can correct? I need help soon as the warrenty is close to running out.

If you want to experiment, you can try disconnecting the 12V auxiliary battery for a few minutes, to see if you can clear the mpg memory that way. If that doesn't work or if you don't care to experiment, a dealer visit would be warranted.

Anniee · 03-21-2008, 10:16 PM

Quote:

Originally Posted by qbee42

With the 2006 the mpg does not reset automatically when you fill up. You have to press reset.

Tom

How about the newer models? 2007 and 2008. do they reset automatically?

Anniee

patsparks · 03-22-2008, 01:49 AM

Maybe the missus is just really consistent?

edthefox5 · 03-22-2008, 09:29 PM

Quote:

Originally Posted by Anniee

How about the newer models? 2007 and 2008. do they reset automatically?

Anniee

No. Not my 07.

pewd · 03-22-2008, 09:32 PM

my 2007 resets after about 1.5-2 miles, after a fillup.

03-21-2008, 02:10 PM	#1
nbaker Junior Member Join Date: Mar 2008 Location: Houston TX Posts: 1 My Car: 2006 Prius Model: Package: #8 Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	computer MPG never changes My wife owns a 2006 Prius which she is in love with. For the last three gas fillups the computer showes that she is getting 41.6 MPG constantly. It never changes. No mater if you have gone 1 mile or 400 miles. The MPG is going back to zero when the car is filled up and I have manually reset it. Yesterday she had gone 2 miles and the MPG was showing 41.6. I know that this is impossible. Is this a computer problem or something I can correct? I need help soon as the warrenty is close to running out.

03-21-2008, 04:02 PM	#3
qbee42 Senior Member Join Date: Mar 2006 Location: Northern Michigan Posts: 10,492 My Car: 2006 Prius Model: Package: #7 Thanks: 95 Thanked 392 Times in 290 Posts Friends: 10	Re: computer MPG never changes With the 2006 the mpg does not reset automatically when you fill up. You have to press reset. Tom

03-22-2008, 01:49 AM	#6
patsparks An Aussie perspective Join Date: Jul 2007 Location: Adelaide South Australia Posts: 9,273 My Car: 2004 Prius Model: N/A Package: Base Thanks: 133 Thanked 185 Times in 143 Posts Friends: 33	Re: computer MPG never changes Maybe the missus is just really consistent?

03-22-2008, 09:32 PM	#8
pewd Clarinet Dude Join Date: Jan 2007 Location: Dallas, Texas Posts: 332 My Car: 2007 Prius Model: Package: #1 Thanks: 0 Thanked 0 Times in 0 Posts Friends: 1	Re: computer MPG never changes my 2007 resets after about 1.5-2 miles, after a fillup.