As part of Toyota’s rigorous quality control programme, we have investigated the cause of a 12 volt flat battery issue that has left some Toyota Auris drivers unable to start their cars after only a short period without use, usually a couple of days.
We would like to apologise for any disappointment and inconvenience that may have occurred as a result of this issue. But we can now confirm that the cause has been identified and a permanent solution developed.
The following information only applies to any Toyota Auris (including Hybrid) produced between December 2012 and February 2014. If you have an Auris produced after February 2014 your vehicle is not affected by this issue. No other models are involved.
Toyota Auris Hybrid Flat Battery: What causes the issue?
The issue is caused when the hazard switch is partially depressed for a very short period of time, incorrectly activating the car’s CAN-bus electrical communications system. This draws a constant flow of current that can discharge the 12 volt battery if the car is left unused for several days.
How can I prevent this from occurring?
Toyota has published a Technical Service Bulletin to its dealer network advising them of a permanent solution to this issue. The bulletin contains information and software files that will enable technicians to modify the software of the car’s combination meter. This update will prevent the incorrect activation of the CAN-bus system and prevent any potential flat battery concerns arising from this area of the vehicle.
If you still have concerns regarding the 12 volt battery of your current generation Toyota Auris then we recommend you get in touch with your nearest Toyota dealer for further assistance. http://www.toyota.co.uk/find-a-dealer
I took my 66 plate Auris to my Toyota Dealer on Monday – well to be exact the AA took it as it wouldn’t even jump-start. (We had been away for 9 weeks) It is now Friday and they still can’t get it fixed. Don’t have a lot of faith in Toyota Service Centres!
Morning Michael,
We’re sorry to hear this.
Hopefully your Auris is now back on the road but if you wish to speak to our Customer Relations Team, their contact details can be found here: https://www.toyota.co.uk/help-centre/complaints-and-feedback
Thank you.
This is Getting Ridiculous Now and having owed Only Toyota and singing their praises for 35 years, a very disappointing situation.
The replies from Toyota, Say, Take it to Your dealer, they can check it out.
The Dealer can DO NOTHING besides a health check, this a is NOT a Dealer Fix, it is now an Endemic Problem that should be addressed, either by fitting a better 12 Volt battery or providing a Free Solar panel or trickle charger or Booster Jump Starter .
When going on holiday, we charge the 12 volt battery for 8 hours. After two weeks away the car starts fine,
Two days later we go for 20 mile drive, No Problems, Next day try to go to the shops, car won’t start battery is dead, Get out the booster pack IN THE RAIN
Good morning Philip.
We’re sorry to hear you’re experiencing problems with the battery. All modern cars drain the 12v battery when they are switched off. This is due to the onboard electrical systems. If the 12v battery is not given a chance to recharge often enough, it will go flat. Read more here and pick up some tips that, if followed, can help ensure your Toyota remains in tip-top condition during an extended layoff: https://brnw.ch/21wDfeR
If you would like your car to be inspected, or to run through recommended options, please get in touch with your local Toyota Centre.
Thank you.