Mitsubishi Recalls 76K Outlander Sport Vehicles to Fix Engine Stalling

There was a three-year period after the Mitsubishi Motors Corporation received notifications of three field reports that came from the United States market. It was reported in each of the three reports that the engine would not start or stall while driving, which prompted an investigation into the reports.

Mitsubishi
Mitsubishi

According to a new report from the US market, the Japanese automaker has learned that an additional report has been received. Based on the analysis of the returned engines, Mitsubishi continued to investigate and concluded that the piston and exhaust valve had been in contact. During the time when the problem was being investigated, no root cause could be identified. A total of five additional reports were received by the Mitsubishi Motors Corporation during the period May 2020 to April 2021. I have found that all of them exhibit the same relationship between the piston and the exhaust valve.

It was after these incidents took place that the Japanese automaker performed a bench test in order to duplicate the phenomenon of an exhaust valve hitting a piston in an attempt to duplicate the incident. In order to find out what was causing the problem, Mitsubishi Motors R&D of America performed on-site investigations on vehicles exhibiting a similar condition, and finally, better late than never, the engineers were able to determine that it was the software that was causing the problem.

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From January 2022 through June 2022, extensive analyses and simulations were conducted so that the results could be provided. When the CVT control unit rests, the Mitsubishi Motors Corporation has determined that the CVT control unit will set the target ratio to the lowest possible value in order to provide optimal performance. There will be an increase in the cost of the Outlander Sport from 2019 through the year 2022, according to the Minato-based company. The answer to this question is no, not all of them, but only those that come equipped with a CVT and a mechanical key.

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While they are aware of a few incidents involving models with continuous variable transmissions and physical keys that look similar to the suspect models, MMC does not know of any incidents that are similar to them. With the beginning of the 2019 model year, the CVT control unit software was changed to have the latest features available. Over the course of May 2019 through May 2022, no less than 21 reports and 29 warranty claims were submitted to the company.

As a result of JATCO’s manufacture of the control unit, it has two part numbers to indicate that it is the product of Nissan. 8631B846 refers to the 4B11 engine and 8631B847 refers to the 4B12 engine. This of course defines which engine it is from. In terms of volume and engine size, the 4B11 is of 2.0 liters and the 4B12 is of 2.4 liters. Both of them are part of the 4B1 family of four-cylinder engines.

As a whole, in the United States, a total of 76,508 vehicles have been called back for recall, vehicles that were produced throughout the period of July 31st, 2018 through May 11th, 2022. It has been decided that the owner notification will begin on August 24th, and that dealers should reprogram the CVT control unit with a countermeasure software that will correct the transmission’s target ratio after the unit has been reset when the control unit is reprogrammed.

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