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Toyota Yaris Zinc MMT 1.4 Diesel MMT - Car jumps out of gear at 50 - 60 mph - gordon100

This car was bought brand new in 2007. And was fine until 2010 when it was recalled by Toyota to fit stop MMT ( Multi mode transmission ) overheating, ever since then the car loses drive and power at any speed. You then have to stop and switch engine off and re start. Car has now been in for re chipping or re programming and now Toyota state that it needs a new CPU and re wire at £700 +. which is extortionate. When this happens the MMT warning light comes on. Has anyone experienced these problems before and had a resolution, as im considering selling for a Honda Jazz.

Toyota Yaris Zinc MMT 1.4 Diesel MMT - Car jumps out of gear at 50 - 60 mph - madf

MMT is pants. Sell/trade it in: Honda CVT is excellent BUT it MUST be serviced correctly which means Honda gearbox oil change every 24k miles.

If no evidence of that run away as ££££Ss

Toyota Yaris Zinc MMT 1.4 Diesel MMT - Car jumps out of gear at 50 - 60 mph - Simon1982

Please could you contact DVSA regarding this issue. I have posted on other forums about this same issue as pasted below:

Dear All,

I have just joined this forum to gather information that I am presenting to the DVSA regarding the MMT Gearbox fault.

I am the owner of a Toyota Verso Corolla 54 reg. Back in May this year I was driving my car home when I was turning into a new road my car had popped into and remained stuck in neutral, with the car being positioned halfway into the road. I tried and tried again to get the car going, including restarting the engine several times until after a few minutes the car managed to get in gear. Within a minute or two at the next junction the same thing happened again and AGAIN whilst I was moving along the road. Luckily for me it was just before the school run so the roads were not so busy.

Anyway, this issue has been documented in other posts on the forum so I am definitely not the only person to experience this. I also believe it affects several vehicles, not just the Corolla Verso.

The next day I took the car to a Toyota garage to see if they could diagnose and resolve the issue. They charged me £95 for diagnostics and came back with the following fault:

"CO full diag and found P0810 recorded in system. Followed diag process and concluded reqs mechanical repair. New clutch, actuator and ECU. 7.2hours"

I will try and be brief with what followed on from here so I can get onto the main purpose of my post:

I looked up this issue on the forum and found that there was a Customer Satisfaction Survrey for this very fault as well as subsequent technical bulletins. It seems like there CSC was a soft recall that I believe should have been a hard recall on the fault. What happened to me was dangerous and there have been cases I have read on the forums/internet of this even happening whilst driving on the motorway.

I contacted Toyota Customer Relations to ascertain whether the CSC was carried out on the vehicle as well as the technical bulletin. Indeed the CSC was carried out on my vehicle to resolve this very issue yet a mere 30,000 miles later the fault appears, perhaps for the first time on this vehicle.

Toyota refused to rectify the situation free of charge...no surprises. Basically they said the Customer Service Campaign was done way back in 2009 and they would only provide a warrenty on the work till 2012.

I then decided to pursue this further by reporting what I consider to be a dangerous fault to DVSA who have so far been most sympathetic. In normal circumstances vehicle age would be an issue but thier concern is that this particular fault has nothing to do with the age of the vehicle, especially as the parts involved were replaced back in 2009. Toyota responded to the DVSAs enquiries by stating that I "may" have had warnings that this issue would occur and that I would have had time to take it the garage to resolve and as such cannot be classed as a sudden dangerous issue. There was no warning lights and I am not sure how you could be warned that your gearbox will pop in and get stuck in neutral all of a sudden.

Unsatisfied with Toyota's response, the DVSA have sent in followup questions which has now lead to Toyota making contact with me to get my vehicle in for inspection. This has yet to be arranged. I rang the DVSA and they confirmed that I should agree to this being done.

Now to the purpose of my post. This MMT issue has been going on for many years now and there are significant number of people affected by it, many of whom will have since had their car either repaired, sold on or scrapped, etc. If anybody has experienced this issue could I encourage you to contact DVSA as it seems like they are finally taking this issue very seriously. The more genuine evidence we have on this the more likely it will be that Toyota will be forced to do what they should have morally done along time ago.

The fact the vehicle has had the Customer Satisfaction Campaign carried out and still experience the same issue is of concern.

Please feel free to post your experiences here too and I will pass them onto the gentleman I am in contact with at the DVSA.

If you are reading this line, I thank you for your time.

Simon

DVSA website to report serious safety defect: www.gov.uk/vehicle-recalls-and-faults/report-a-ser...t

PS I have attached the relevant Customer Satisfaction Survey and Technical Bulletins here. These documents I have obtained through other postings on this forum