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Please check my previous post last year. I had the same problem that I noticed the car regenerate cycle reduced from 400 miles to 100 miles and today it regenerate at every 30 miles.
To cut story short:
1. The car was serviced by Burton garage and two weeks later the service spanner light flashing. I checked the oil and it was 1 inch above the max line on the dip stick. I knew this due to dpf regeneration.
2. I reported the problem to Toyota UK and was advised to take if to Burton garage. This was my biggest mistake as they did not know what a dpf is and two previous service was carried out by them and i noticed they have used regular oil when I checked the invoice. They should have used low ash oil. The dpf could have been damaged by this service dealer. They told me the increased oil was due the mechanic putting too much oil. That was foolish answer.
When they investigated the reported dpf problem, I don't think they had the knowledge. I requested to provide the pressure reading which they failed to provide.
3. I complaint to Toyota UK and was told to take the car to another garage in Birmingham, similarly hey did not find anything wrong except they carried out a force regeneration and updated the ecu software. The car was handed back to me stating that everything is fixed.
4. The car was driven and I dud not noticed any improvement to the regeneration cycle, ie between 70 to 100 miles. I later used dpf cleaner fluid added to the fuel. This helps to improve the regeneration cycle to 300 to 400 miles for the next 7000 miles. After even though I continued to use the dpf cleaner fluid it did not make any difference and the regeneration cycle reduced to 70 miles and until last week it's down to 30 miles.
5. The car was due for another service last week so took it to Bromsgrove garage and I explained to he Master Mechanic that I had the dpf issue and I wonder if he us interested in investigating the problem. When I spoke to this mechanic he was being very receptive and understood what my complaints and was very interested to get to the bottom. I was told to book in the car for him to look at after the service.
6. Bromsgrove serviced the car and I driven car for another two weeks and the service light was flashing. Again I confirmed if was due to the rise in the engine oil. In fact thus was a good timing for the problem to show up as it was going to the garage to be investigated.
7. Bromsgrove had the car for 3 days which they have performed a force regeneration and the and they measured the dpf pressure which shows 102% loading.
It should not get as high as that as the regeneration should starts at 45% and should go back down near to zero.
The garage confirmed that the car definitely have dpf problem. At this point they checked the status of the ecu. They said the ecu has the software updated but the bulletin issued hy Toyota was not executed properly. They are saying that Birmingham didn't do he correct job and now the dpf has been damaged.
8. Bromsgrove recommended to replace the short block engine, vacuum pump and the dpf. Bromsgrove say all the 3 parts need to be replaced but they can't replace the dpf ad it wax damaged by Birmingham. So the garage stated that if the dpf is not replaced it's no point replacing the other 2 parts as the root cause is not fixed. Toyota UK tried to make a claim against Birmingham. There seems to be some wrangling going on between the two organisation. So I was stuck with no repairs.
9. I later emailed the Toyota UK MD and I had a response the following morning saying that the garage is authorised to carry out the repair when the parts are in stock. So just waiting for the parts to turn up at the garage now.
Conclusions :
1. Toyota diesel dpf cars definitely have problems. But it is difficult for the customer to proof to them as most garage are incompetent and are not interested in fixing problems. The car dash should provide an indication that the car is performing dpf regeneration so that it is clear to the customer and the garage who are investigating the problem. Toyota UK will tell you that the increased I engine speed from 600 rpm to 900rpm is due to AC and electrical loads are on. Which is cobblers and I have not seen a car would rev that high with those loads switched on.
3. From what I have gathered most people who complaints dpf regeneration, the xar is about 2 years old. So if the car is nog fixed and is sold on ti the second hand market it is very that someone has to fix it at a hefty cost.
4. I believe Toyota has some issue with listening and taking customers complaints seriously. I did get any remedy for over 15 months. It need to be complaint to the top of the company.
For this reason I will not buy another Toyota car based on the customer service and dealerships I have experienced.
5. If any one wanted to fix their dpf car, take it to Bromsgrove as they have the knowledge and interest in fixing problems.
I hope the above helps to resolve your problem and be persistent with Toyota UK.
Regards.
Perfect.
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