Differential Unit problems of the 2008 Mitsubishi Lancer

All Mitsubishi Lancer evolution x from years 2008 through the cars final gear in 2015 suffer from a design flaw to the s-awc system. The active yaw control / active center differential system relies on a pump in order to operate . The location is unprotected from the elements and thousands of them have failed to date. . Mine failed which rendered my car to no longer drive in a predictable or safe manner. The all wheel drive and stability control system was compromised and traction control no longer functions as expected. Instead of this becoming a recall Mitsubishi extended a warranty to replace this exact component rather than admitting fault for an obvious design flaw. They refused to warranty mine as this exception was only made after my warranty had already expired even though my pump failed before I hit 100k miles. The acd / ayc pump is critical component to the safety and stability of the Lancer evolution 10 . Extending the warranty to only cover a small portion of failures is unacceptable and dishonest. The design is unsafe and the repair and replacement of this and other affected components is extremely costly. This should be a recall. All pumps will eventually fail as the seals eventually fail and corrosion of the pump or electric motor . This effects all evolution 10s regardless of climate. . Read more...

Active yaw control (ayc) and active center differential (acd) pump failed. Not covered under power train warranty pump was corroded and could no longer produce enough pressure. Pump in located directly behind passenger rear wheel exposed to water, salt, and other road debris.

Failure of transmission center differential pins in manual 2008 models. I was driving my car at highway speeds when the car popped out of gear to neutral, then I shifted to 4th and popped out again to neutral, I had to quickly swerve to the shoulder and the entire transmission locked up causing the car to skid. Upon towing it to the dealer they said the center differential pins have backed out they said "it happens but not that common. " I was in disbelief the pins had caused a crack in the transmission casing and all the oil in the transmission had leaked out causing the the gears to cease up nearly causing an accident. See pictures, upon research I have seen many similar situations on the evo forums and in fact 2 major companies jacks transmission and sheptrans offer "upgrades" to prevent this! upgrades? to cause a transmission from completely failing. Apparently Mitsubishi recognized this and upgraded the pins heat coating in 2010 to prevent this but I am stuck with a 5000 dollar repair bill and I am out of warranty. I tried to remedy this with mitsu USA and it happened a year ago but I am still upset no recall has been issued and I still drive this car to this day. I would like this to be reviewed it is very dangerous. 2008 Lancer evo gsr models.

This is report of a known failure by Mitsubishi motor corp. At 50,800 miles on 12/17/2013 my cars super-active center differential (s-acd) started blinking at me. It would not allow changing of the settings anymore for tarmac/gravel/snow. Immediately there after, the driver information panel popped up with a yellow "awd service required" indicator. I brought my car to nashua, nh Mitsubishi/Hyundai for diagnosis on 12/19/2013. There they applied TSB-sc11-002. This unfortunately did not resolve the issue. I was then informed that the car required a replacement acd pump and was quoted $1,995 for the repair, which confused me due to the fact that my car was still under manufacturers power train warranty, and a pump, that controls the awd system of a car, seems to be power train related, at least in my eyes. The north east regional representative was contacted on my behalf by the dealership to request coverage of this item, which was ultimately denied. This is a severe safety issue, as the car no long handles properly in conditions it was designed for. I am no longer able to select the car for snow, living in the north east, driving a car marketed in the north east, this is a huge problem. To further the issue, this problem is well known by Mitsubishi, it has been documented well, tracing all the way back to cars manufactured in 2006. 90% of all pump failures could be completely eliminated by adding a seal to stop corrosion inside the pump which leads to the untimely failures. If no recall is issued for this failure, at the very least, Mitsubishi motors should be forced to cover this under power train warranty for 5yrs/60k miles. Instead of limiting it to 3yrs/36k bumper to bumper. . Read more...

During cold weather (approximately 40 degrees or less) during the evening, my super all-wheel-control servicing light was triggered during a low speed turn. This indicates a faulty or failing awc/ayc pump, a mechanical component which provides ayc fluid to the front and rear differential of the vehicle, aiding in stability control. When the pump is inoperable, decreased (or no) pressure/fluid is sent to the differentials of the vehicle, which can cause serious drivetrain damage and failure-- thus the ayc pump is recognized by Mitsubishi as a critical component of the drive train. However, it is not covered under Mitsubishi's 5 year/60,000 mile drivetrain warranty, which I feel is disingenuous. This is a a serious safety concern as a faulty or failed pump effectively disables the awd component of the vehicle and makes the drive train more likely tosuffer catastrophic damage during use, which can result in crashes and injury. Mitsubishi is aware of this issue and that these pumps are poorly-designed for providing the ayc fluid to the differentials during cold weather; the fluid becomes extremely viscous at low temperatures and the pump is either unable to continue to flow the fluid to necessary components or the pump completely fails in the attempt, requiring expensive replacement at the owner's expense.

This vehicle is equipped with an active control differential (acd) which is actuated by the acd hydraulic pump. The acd is a part of the vehicle's all wheel drive system. After giving the engine an 8 minute warm up on idle, the vehicle was being driven on a 20âºf of ambient temperature. The vehicle was on a stop light, and upon gently accelerating the car on green light a warning light came up on the vehicle's dash board. The vehicle was brought to the nearest Mitsubishi service shop 4 days after the incident with the warning light still on the vehicle's dash board. After service technician worked on the vehicle, the service manager said that the acd pump is the problem which needs to be replaced and will cost $2100 of parts and labor. 8 months prior to the incident, the Mitsubishi service shop re-flashed my vehicle's all wheel drive ecu to specifically prevent the failure of the pump especially in cold environments. Mitsubishi replaced the acd pump at my expense, and it's been approximately 2 years that my vehicle is on the replacement pump. The service manager told me that the combination of the hydraulic fluid becoming thick on cold weather and the corrosion on the hydraulic pump that the salted winter roads bring is what makes the acd pump fail. After researching on the internet car forums, this occurrence where the acd pump fails on colder regions is not uncommon even with the previous generations of this vehicle that are equipped with this acd system.