Hybrid system goes off

[salmanghiyas]

Hello all,

I have a 2012 Yaris 1.5L Hybrid, I have just purchased this vehicle from another guy near my town.

I am facing a strange yet weird issue in the car, whenever there are 3 or more persons in the car, suddenly the car's hybdrid system goes off and the car goes to safe mode and runs only on gasoline, then I have a disconnect the Battery terminal grip for few minutes to reset the ECU.

I am attaching the pic of the speedometer as well.

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[as13]

I see the engine management light is on, identifying the fault code, and eliminating that is a start

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[Catlover]

Is that 34 degree centigrade I see on the dash. That’s excessive, could that have anything to do with your problem.

[salmanghiyas]

Is that 34 degree centigrade I see on the dash. That’s excessive, could that have anything to do with your problem.

Yes, 34 degree centigrade it is, sometimes it goes above 40 as well, I don't think the problem is due to temperature because the most times the car got this issue was in night when the temperature was around 25 degree

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[Devon Aygo]

Have you checked the Hybrid Battery cooling fan filter? If this is blocked the Hybrid Battery gets too hot and the Hybrid control system reduces the use of the Battery to protect it.

[salmanghiyas]

Have you checked the Hybrid battery cooling fan filter? If this is blocked the Hybrid battery gets too hot and the Hybrid control system reduces the use of the battery to protect it.

Can you please guide me how to locate it?

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[Devon Aygo]

In the LHR footwell there is an air intake under the rear seat,

lift the rear seat base ( needs a sharp tug )

remove the trim clips holding the air intake trim

There will be a gauze filter behind the intake, pop it off and clean

 

If there is no gauze filter follow the air pipes back the cooling fan, remove & clean the fan.

[Bomber209]

Hi, if the filter etc is clean, it could be whoever is sitting in rear seat is blocking the inlet (with a handbag or similar) somehow.

[jonlaw]

Hybrid Battery cooling fan filter might be the problem +1

On 7/20/2019 at 8:24 PM, Devon Aygo said:

Have you checked the Hybrid battery cooling fan filter? If this is blocked the Hybrid battery gets too hot and the Hybrid control system reduces the use of the battery to protect it.

 

[Catlover]

On 8/2/2019 at 12:55 AM, jonlaw said:

Hybrid battery cooling fan filter might be the problem +1

First mentioned in this thread July 20th, then again July 21st and then July 22nd

[The_Dude]

Hi, 

I have same problem on my yaris.

Can you explain me how did you solve this problem ?

Thanks a lot !

[FROSTYBALLS]

14 minutes ago, The_Dude said:

Can you explain me how did you solve this problem ?

See Devon Aygo's earlier posts within this topic of the 20th and 21st July 2019