Problems after battery change -2005 MMT - Toyota Yaris Forums

sceh · 10-13-2019, 02:48 PM

I changed the battery after now it idles at 400rpm and almost cuts out. It drives ok but if I stop even after 200 yards, the MMT box refuses to engage. If I stop the engine and restart it, the gearbox engages and off you go - until the next time you stop.
This is directly related to the battery change since it has happened before after I left the battery disconnected for a day or so but this time I bought a new battery and changed it inside 30 seconds.
Of course this also happens when you are just about to engage a roundabout in front of a big truck...
Why?
Any clues?

10-13-2019, 02:48 PM	#1
sceh Drives: yaris 2004 Join Date: Jul 2017 Location: france Posts: 40	Problems after battery change -2005 MMT I changed the battery after now it idles at 400rpm and almost cuts out. It drives ok but if I stop even after 200 yards, the MMT box refuses to engage. If I stop the engine and restart it, the gearbox engages and off you go - until the next time you stop. This is directly related to the battery change since it has happened before after I left the battery disconnected for a day or so but this time I bought a new battery and changed it inside 30 seconds. Of course this also happens when you are just about to engage a roundabout in front of a big truck... Why? Any clues?

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