Feature:1. Fitment: Manufactured on the basis of original standard, fit for A6 S6 C5 2.5TDI. Please confirm whether your model is applicable before buying.2. Replacing OEM Number: Replacing manufacturer part number for reference are 4B0927156FJ, 0260002884, which can ensure perfect match.3. Perfect Fit: Transmission computer unit control module (not a remanufactured part), designed and manufactured to original specifications, ensuring that the shape and function match the original equipment.4. Long Use Life: The new computer board is made of durable aluminum alloy housing and welded internal circuit boards to effectively prevent vibration and wear.5. Ideal Replacement Part: This TCM can be used in the original car burnt out transmission computer unit control module, let your car restart in a short time.Specification:Condition: Not Remanufactured PartItem Type: ECU Control ModuleMaterial: Aluminium Alloy + ABSOEM: 4B0927156FJ, 0260002884Application: Fit for A6 S6 C5 2.5TDIInstallation Precautions:1. it is recommended to find a professional auto mechanic to install, programming is required before installation2. product installation to pay attention to, first check out the reasons for the previous computer board bad, to avoid using the same fault again burned computer board.3. check whether the voltage is normal before installing the computer board (voltage of about 12V), more than 15V is recommended not to install, check whether the wiring is normal, whether the overlap is good, otherwise there is the possibility of burning the computer board.4. after the installation of the computer board (insert the plug for trial operation) key on the NO position back and forth switch three or four times before starting. 5. If the car has anti theft function, you need to decode (match) before you can, this depends on your car rather than the computer boardTroubleshooting Solution:1. The fault light indicates that there is a problem with the sensor.2. Repeatedly burn the computer board ECU or can't afford to refuel, please check whether the generator voltage is normal.3. If there is a lack of cylinder, check whether the spark plug, ignition line, fuel injectionnozzle, etc. are normal.4. If there is idle instability, please check whether the idle motor and throttle valve body are normal and have foreign objects.5. If there is difficulty in starting, please check whether the pressure sensor and water temperature sensor are normal.6. If it cannot be started, please check whether the crankshaft position sensor Speed Sensor is normal.Basic knowledge of circuit board:1 product installation: confirm that the product model and specifications match, install and fix the new circuit board, connect the wiring harness connector, repeatedly switch the ignition switch 3-5 times switch time 2-3s, off time 4-6s.2 After installing the computer board to check and judge:(1) whether the idle speed is running normally hot engine 800-950 rpm, cold engine 1000-1300 rpm.(2) whether the electronic fan is running normally 85 open, 90 close.(3) whether the air conditioner is running normally, open the idle speed to 1100-1300 rpm.(4) Whether the exhaust gas is normal or not, please check the pressure sensor if it is not normal.(5) there is an idle speed, refueling powerless, please adjust the ignition angle properly..Package List:1 x ECU BoardNote:1. Please double check the part number of your item, matching information is for reference only.2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!