CauseA number of different things can cause the transmission warning light to come on. If you're able to drive normally, it's fine to travel to a short distance destination while going slow. However, if you can only drive forward or backward, or not at all, it's likely that damage has occurred inside the transmission.

Even if you are able to drive normally when you start the car again after shutting the engine off, we recommend that you visit a service center or Samjung Auto Mission as soon as possible for a thorough check. If you are still unable to drive the car, please use an insurance towing service or other vehicle transportation service to bring your car to Samjung Auto Mission. (We receive cars for service 24/7)

CauseTransmission hold is a symptom where the vehicle is stuck in a specific gear (usually Gear 3) and will not shift, with a stalling sensation at low speeds and a lack of speed at high speeds. This is a measure that allows the TCU to recognize that an electronic or mechanical failure has occurred and enter a self-protection mode to prevent further damage.

If it's a temporary issue caused by an abnormal electronic signal, you may be able to drive normally when you turn the engine off and on again. However, it's usually much more likely that mechanical damage has occurred, so rather than driving the car, we recommend that you bring it in to a service center or Samjung Auto Mission for a full inspection, preferably by towing.

CauseThe most likely cause is a failure of the torque converter, a device that efficiently transfers the power produced by the engine to the mission. Initially, the shudder may occur in a certain range, but as the failure progresses, it may become impossible to drive.

The torque converter is a device mounted at the front of the transmission, and if left unattended, the damage can affect other parts of the transmission. We recommend repairing it as soon as possible. Samjung Auto Mission is a specialized company that has the best torque converter remanufacturing facilities and technology in Korea and holds relevant patents.

CauseThe failure is most likely in the valve body, the unit that controls shifting inside the transmission, or in the mechatronics that combines the valve body and TCU. Initially, there may be a slight jerking when shifting gears, but as the failure progresses, there may also be some shock when simply shifting the gear lever from a standstill (the shock that occurs when shifting gears on an incline is unrelated).

Actions that can be taken vary depending on the manufacturer and model of the valve body and mechatronics. In general, the vehicle may need a repair or a new replacement.

CauseRear-wheel/4-wheel drive vehicles are equipped with differential gears to shift drive power, and if the internal bearings or gears become damaged, a high-frequency noise is caused depending on the rotational speed. If the damage is minor, you'll hear a high-frequency noise that sounds like a light humming. But if the damage is more severe, you may have trouble driving and hear the machine banging.

There are many different things that can cause a car to make noise, so it's best to have your car inspected by a service center or Samjung Auto Mission to determine if it needs to be repaired.

CauseThis symptom is most common on vehicles with electronic gearlevers. It is often caused by a failure in the control module (TCU or automatic lever unit) or a failure in the gear lever itself.

Check the owner's manual for the unlocking the park setting for each model.
Mercedes-Benz - There is no way to unlock the park setting in the vehicle, so it must be towed.
BMW (older models) - Pull the manual park release cable under the steering wheel.
BMW (newer models) - Use a special tool in the trunk to remove the cup holder in front of the shift lever, insert the tool and turn it to unlock the park setting.
Audi - Remove the ashtray in front of the shift lever, press the button in the small hole, and pull the lever.

CauseThis symptom occurs primarily in dual-clutch transmissions (Audi S tronic) and is often caused by abnormal control of the valve body (mechatronics) inside the transmission or clutch damage.

Carefully inspect the mechatronics, clutch, and mecha+clutch for damage and decide how to proceed with the repair. Typically, if the mileage is below 80,000 kilometers, it is more likely that the issue has to do with the mechatronics alone, but if the mileage is above 80,000 kilometers, it is more likely to be a mecha+clutch failure.

CauseThis is a common issue in 4-wheel drive vehicles and is typically caused by a malfunction in the transfer case, the unit that distributes drive power.

First, check the recommended wheel and tire sizes for compliance, then check the front left/right and rear left/right tire tread wear and replace the tires or adjust the alignment if there is uneven or abnormal wear.