Occasional nonstop gas to electric to gas switching

normanj · 07-10-2006, 12:29 AM

in certain circumstances - at the stopped position - red light etc the car will switch from gas to electric to gas to electric non stop as if it cant decide what engine mode to use - putting it in neutral stops the problem but dealer cannot get it to happen in order to correct it - any ideas???

Bill Merchant · 07-10-2006, 12:43 AM

When this happens, is your battery in the Energy screen all green? I have a long hill I come down on the way to my house. Frequently the battery goes solid green by the time I get to the bottom, so, to protect the battery from too high a charge, the car cycles the ICE on and off, without fuel, just spinning it up fast, to burn excess charge. Startling the first time it happened.

mssmith95 · 07-10-2006, 02:37 AM

Mine never goes back and forth, but will occasionally either keep the ICE running (for no apparent reason), or keeps the electric motor running (mashing the brakes harder stops that one). I figure that the car knows what it is doing...although both felt strange at first.

If it is not what Bill or I have described the it would be a good idea to keep a log of the issue (time of day, weather, number of bars, route, how long you had been driving) to build a "story" for the dealer to then try to recreate.

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07-10-2006, 12:29 AM	#1
normanj Join Date: Jul 2006 Posts: 6 My Car: Model: Package: Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	in certain circumstances - at the stopped position - red light etc the car will switch from gas to electric to gas to electric non stop as if it cant decide what engine mode to use - putting it in neutral stops the problem but dealer cannot get it to happen in order to correct it - any ideas???

07-10-2006, 12:43 AM	#2
Bill Merchant absit invidia Join Date: May 2005 Location: USA \| Oregon \| Portland area \| 97004 \| Posts: 4,096 My Car: 2007 Prius Model: Package: #5 Thanks: 19 Thanked 17 Times in 14 Posts Friends: 62	When this happens, is your battery in the Energy screen all green? I have a long hill I come down on the way to my house. Frequently the battery goes solid green by the time I get to the bottom, so, to protect the battery from too high a charge, the car cycles the ICE on and off, without fuel, just spinning it up fast, to burn excess charge. Startling the first time it happened.

07-10-2006, 02:37 AM	#3
mssmith95 "I think my Dad's gone CRAZY!" Join Date: Feb 2006 Location: Los Angeles Posts: 533 My Car: Model: Package: Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	Mine never goes back and forth, but will occasionally either keep the ICE running (for no apparent reason), or keeps the electric motor running (mashing the brakes harder stops that one). I figure that the car knows what it is doing...although both felt strange at first. If it is not what Bill or I have described the it would be a good idea to keep a log of the issue (time of day, weather, number of bars, route, how long you had been driving) to build a "story" for the dealer to then try to recreate.