BTR [DSI, ION]
Source-verified model
BTR [DSI, ION] M78
6-speed automatic transmission DSI-6 \ M78LE (M96) was developed in 2008 by specialists of former BTR bureau with a new Chinese owner Geely under a new brand DSI. It is more advanced modification of 6-speed automatic transmission with a longitudinal positioning for 2-liter engines SsangYong Actyon.
Speeds
6
Type
AT
Drive
RWD/AWD
ATF capacity (L)
9,5
ATF change (L)
4,5
ATF type
ATF 3292
Other and alternative codes of this transmission
DSI M78
BTR78
M-78
M 78
M78
BTR
ION M93LE
verified naming
OEM designation
source name
Common problems & symptoms
Problems and symptoms reported for this transmission, compiled from repair sources. Not a complete list.
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Oil Pump Bearing Damage
Worn torque converter vibrations propagate to oil pump bearing, causing premature bearing failure.
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Planetary Gear Failure
Planetary gear damaged by excessive torque and torque converter vibrations; considered a known weak point of M78LE.
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Torque Converter Wear
Worn torque converter generates vibrations that cascade damage to oil pump and planetary gear assemblies.
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TCC Shudder Vibration
Torque converter clutch shudder symptom indicating TCC lockup malfunction or fluid degradation.
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Solenoid Valve Failure
Solenoid-electric controllers and shifter solenoids require replacement; electrical control units prone to failure.
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Transmission Vibration Transfer
Vibrations felt through drivetrain originating from worn torque converter, leading to secondary component damage.
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About this transmission
Transmission general data
6-speed automatic transmission DSI-6 \ M78LE (M96) was developed in 2008 by specialists of former BTR bureau with a new Chinese owner Geely under a new brand DSI. It is more advanced modification of 6-speed automatic transmission with a longitudinal positioning for 2-liter engines SsangYong Actyon.
Technical issues and repair guidelines
In many cases vibrations from the worn-out torque converter lead to the damage of the oil pump bearing. The pump with the planetary gear is considered to be a soft spot of 6-speed М78. The planetary gear is damaged by increased torque and vibrations from the torque converter. With regard to electrics solenoids-electric controllers, shifters and solenoids-electric controllers M78 are replaced in this transmission.
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