problem acceleration after battery jumpstart - Toyota Yaris Forums

yaristotle · 10-11-2017, 10:36 PM

Like the fool that I am, I left the lights on all day on my 2007 Yaris manual transmission

and came back to dead battery. I had the battery jump started and now the car has problems on acceleration. Starting on, I have to press down harder on accelerator pedal to get going and when I shift, I also have to press down a little more and shifts are not as smooth. Any idea of the problem and solution?

yarisimean · 10-11-2017, 11:53 PM

Maybe the computer has to relearn how you drive since yaris has an electronic throttle. As for the not so smooth shifting, I have no idea but I find it unlikely that it has to do with the electronics since you are the one doing the shifting.

I'm just spitballing. I'm interested to know what it is.

WeeYari · 10-13-2017, 04:45 PM

I imagine by now the OP no longer has an issue. Whenever the battery has been drained or disconnected, the ecu goes through a learning phase. Until it figures everything out again, you experience extremely low and erratic idle.

Sent from my Elite_5_5_Octa using Tapatalk

10-11-2017, 10:36 PM	#1
yaristotle Drives: Yaris Blue HB 5 speed Join Date: Oct 2008 Location: indiana Posts: 13	problem acceleration after battery jumpstart Like the fool that I am, I left the lights on all day on my 2007 Yaris manual transmission and came back to dead battery. I had the battery jump started and now the car has problems on acceleration. Starting on, I have to press down harder on accelerator pedal to get going and when I shift, I also have to press down a little more and shifts are not as smooth. Any idea of the problem and solution?

10-13-2017, 04:45 PM	#3
WeeYari View User's Garage Drives: 06 Polar White 5dr, 13 Soul 4u Join Date: Oct 2008 Location: Georgetown, Ontario, Canada Posts: 5,740	I imagine by now the OP no longer has an issue. Whenever the battery has been drained or disconnected, the ecu goes through a learning phase. Until it figures everything out again, you experience extremely low and erratic idle. Sent from my Elite_5_5_Octa using Tapatalk __________________

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10-11-2017, 11:53 PM	#2
yarisimean Drives: 2012 Yaris 3d LB Join Date: Feb 2017 Location: Cali Posts: 27	Maybe the computer has to relearn how you drive since yaris has an electronic throttle. As for the not so smooth shifting, I have no idea but I find it unlikely that it has to do with the electronics since you are the one doing the shifting. I'm just spitballing. I'm interested to know what it is.