Malfunction Alerts while driving normal.

[Melissahannah]

Hi everyone, hoping someone can help. Got my 2021 Yaris cross Design in August, been great up until I was driving from London to Liverpool the end of October. A lorry pulled out in a lane in front of me and caused me to quickly put my foot down to move to the other lane, as I did this I got loads of malfunction warnings come up on my dash. These were pre collision system malfunction, hybrid system malfunction, LTA unavailable, brake power low and parking brake malfunction visit dealer and my dash lit up like a Christmas tree. Called AA they came out did the diagnostic couldn't find anything wrong with it said it could be low Battery but I'd done a 2 hour drive at this point. Said I was safe to carry  on my drive to Liverpool and I booked it in at Toyota. They did a full check and couldn't find anything wrong. Was still driving fine and normal.

2 weeks later, I've just been driving along a dual carriage way after a half hour motorway drive doing 60, nothing unusual, out my foot down a little bit and it all happened again (attached pictures), again still driving fine and normal. The screen where it shows the power from the engine to the motor to the wheels to the Battery wasn't changing though with all the arrows showing you what's powering the car not showing. My car is still in warranty as I've only had it 3 months, so I'll be ringing Toyota again on Monday. 
 

can anyone please give me an idea of what may be going wrong? 
 

My car doesn't go a day without me driving it with a mix of short and long journeys 30-60 mph daily so not sure it's a low Battery thing. 
 

thank you!!

[dannyboy413]

I know nowt, but could it be a loose Battery connection? 

[dash]

Could be the engine damper has slipped (it’s a clutch in the drivetrain which normally never slips and should stay permanently engaged). In your case heavy acceleration may have caused it to slip. Should show up as an error when diagnostic equipment is connected to the OBD port.

[Haliotis]

One single cause of these problems is the faulty behaviour of sensors - a lot of which are built into the modern car.  It is sometimes necessary to assess how the car is behaving (listening for unusual changes in the sounds of a car’s workings) and make a decision as to whether it is important that you pull over and stop. Most of the situations likely to be critical are backed up with a red warning symbol as well as an instruction to stop showing in the MFD display, although even here it can be a faulty sensor rather than a real fault.

[TonyHSD]

If there are warnings on dash then there will be faults stored into the ecu. AA and dealer mechanics should have seen these, perjury ask them above these of anything available and share with us. 
It is very possible to have 12v Battery issues, poor confection, poor Battery health. Something these batteries lose ability to hold charge and this comes apparent after a longer drives, similar to your experience. When Battery tested may show ok , perhaps anything over 12.2v for them is ok but then when the battery is loaded and charged for longer time fails. 
These are the things you or your mechanics needs to double check. 
For the damper clutch failure there is always an engine malfunction light too, this orange one along with hybrids system malfunction, so not sure if this can be the case. 

[Melissahannah]

Update: 

I rang a different Toyota branch than the one I usually go to, and they said to remove anything from the back passenger footwells. I had a pillow, a blanket and a load of my nephews stuff there behind his car seat. Moved it, went for a drive and the message disappeared! Turns out there's a vent there for the hybrid system! So there you go! Nearly paid £100+ for someone to move a cushion from the footwell! 

[Brooke bond]

1 hour ago, Melissahannah said:

Update: 

I rang a different Toyota branch than the one I usually go to, and they said to remove anything from the back passenger footwells. I had a pillow, a blanket and a load of my nephews stuff there behind his car seat. Moved it, went for a drive and the message disappeared! Turns out there's a vent there for the hybrid system! So there you go! Nearly paid £100+ for someone to move a cushion from the footwell! 

Thanks for the info, my dealership did tell me not to block the vent, all dealerships should be telling customers of this, hope it's the end of your problems

[Benzowner]

Had this on Tuesday when we had the snow, on doing s search it appears the radar system doesn't like the cold and snow. If you do a general search on google tjere is a thread on this forum about it going back a few years. By the way. mine is all clear and working fine now.

[Melissahannah]

17 minutes ago, Benzowner said:

Had this on Tuesday when we had the snow, on doing s search it appears the radar system doesn't like the cold and snow. If you do a general search on google tjere is a thread on this forum about it going back a few years. By the way. mine is all clear and working fine now.

Yeah my tyre pressure warning came up when the temperature has dropped to below -1°. 

[dash]

I wish the warnings were more relevant. If the HV Battery under the back seat is getting too hot then there should be an error message to that effect !!

[Brooke bond]

9 minutes ago, dash said:

I wish the warnings were more relevant. If the HV battery under the back seat is getting too hot then there should be an error message to that effect !!

Great point

[Melissahannah]

2 hours ago, dash said:

I wish the warnings were more relevant. If the HV battery under the back seat is getting too hot then there should be an error message to that effect !!

Very much agree with this! Or have the malfunction in the dash then a descriptive message on the 17" touchscreen telling you to clear the vent! I was never told about this vent when I bought the car and it's the side of my nephews baby seat so it would have kept happening when we put our baby bags behind the seat! Thank god for the man at H W Moon Toyota Wigan!

[Cyker]

It does seem a bit of a missed opportunity when, with all these gigantic multi-function displays, the error messages we get are still the equivalent of turning on a Check Engine light  

It's like the beeping! Why are all the beeps virtually the same? What's even the point of having them when they tell you nothing? All they do is distract you!