Automatic Transmission Control Module problems of the 2005 Mazda MAZDA6

Four problems related to automatic transmission control module have been reported for the 2005 Mazda MAZDA6. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Mazda MAZDA6 based on all problems reported for the 2005 MAZDA6.

1 Automatic Transmission Control Module problem

Failure Date: 05/02/2010

: I have a 2005 Mazda 6 wagon bought new off the dealer's lot. 4 years later, in sept. 2009 with 22k miles on it, I was coming off a curving exit ramp when I stepped on the gas to merge into traffic and nothing happened - no pickup - I just started coasting. This happened a few times before in the previous years (maybe 4-5 times), but those times it felt more like a belt slipping and it "caught" again very quickly, like in a split second. The ramp experience was more pronounced and lasted longer, like a full 2 seconds, which was more scary and potentially more hazardous. Turned out the tcm (transmission computer module) had to be replaced. It would have cost $1400+ but luckily I bought an extended warranty when I bought the car so it covered that cost. Its happening again, so I have to take it in to the dealer when I can to get it checked again. Not a good feeling when your trying to merge into traffic and you expect the car to move when you hit the gas, and it moves just enough to get the nose of the car into the lane of travel, then stops dead while cars are bearing down on you. Extremely scary. Hoping this is not a continual recurring event. Update: took the car to the dealer the first week of April and again today, first week of may (the 3rd) 2010 for the exact same problem mentioned above- while driving car just slows down, no power. Step on the gas, nothing. Then it kicks in and hesitantly moves. This is the 3rd or 4th time taken to the dealer for the same problem with the transmission. Getting ticked off about it now. . . . .

2 Automatic Transmission Control Module problem

Failure Date: 09/06/2009

I have a 2005 Mazda 6 wagon bought new off the dealers lot. 4 years later, in sept. 2009 with 22k miles on it, I was coming off a curving exit ramp when I stepped on the gas to merge into traffic and nothing happened - no pickup - it was like I just started coasting. This happened a few times before in the previous years (maybe 4-5 times), but those times it felt more like a belt slipping and it "caught" again very quickly, like in a split second. The ramp experience was more pronounced and lasted longer, like a full 2 seconds, which was more scary and potentially more hazardous. Turned out the tcm (transmission computer module) had to be replaced. It would have cost $1400+ but luckily I bought an extended warranty when I bought the car so it covered that cost. It's happening again, so I have to take it in to the dealer when I can to get it checked again. Not a good feeling when you're trying to merge into traffic and you expect the car to move when you hit the gas, and it moves just enough to get the nose of the car into the lane of travel, then stops dead while cars are bearing down on you. Extremely scary. Hoping this is not a continual recurring event.

3 Automatic Transmission Control Module problem

Failure Date: 07/02/2007

Had 30000 mile service done prior to a 1000 mile one way vacation trip. After arriving at our destination washed car at coin car wash. Drove car for about 10 minutes and engine began surging, transmission would not move from second gear, and vehicle speed would not exceed 20 mph. Exited roadway and parked vehicle overnight. At engine startup vehicle ran fine but with engine light on. Drove 60 miles and vehicle suffered complete shutdown on freeway. Vehicle coasted to a safe stop and called Mazda roadside. Vehicle would not even turn over. Vehicle towed to dealership, ignition coil and pcm were replaced. Dealer approved vehicle for 1000 mile return trip. After only 4 hours of driving engine light came on again. Exited interstate, parked vehicle and called Mazda roadside. Vehicle currently under repair. This was two identical failures within 200 miles of use.

4 Automatic Transmission Control Module problem

Failure Date: 07/01/2005

Consumer says he is having problem with transmission. Transmission will drop gears on its own, consumer just had vehicle at dealer for transmission slippage and harsh shifting. Consumer said that dealer did a software calibration on the transmission control module. Consumer says now when he is traveling on highway and consumer tries to accelerate transmission will drop from 4th gear to 3rd gear by itself and this makes acceleration very difficult. While driving vehicle in city consumer says that transmission will drop from 4th to 2nd while trying to accelerate. Consumer notices which gear by the indicator light located on dash. Consumer says that slippage and harsh shifting is now corrected, but he is having problem with transmission dropping gears. Consumer says he has an email that he somehow come into position of, this email is from Ford and says that there is a problem with this transmission in other vehicles as well as same type as consumer. Consumer says that this problem began yesterday morning and dropped gears like this about 30 times in 24 hours. Consumer says that the malfunction took part mostly yesterday and this morning in south field, mi. Consumer says that he drove as much in the city as he did on the highway yesterday and this morning.


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