How To Do 10 Maintenance Services And Auto Repairs-Topdon  automotive diagnostic scanner

How To Do 10 Maintenance Services And Auto Repairs

How To Do 10 Maintenance Services And Auto Repairs

Taking care of your car is like taking care of your body. The more you take care of your body or car, the less likely you will need a doctor or mechanic to get you out of trouble. Proper car care will save you time, money, and even be a lot of fun. Here’s 10 maintenance resets every car technician and car owner need to know about.

1. Oil Reset  


Oil, also known as engine lubrication oil, is used for lubrication and wear reduction, auxiliary cooling, sealing and leakage prevention, rust and corrosion prevention, shock absorption, and buffering for engines.


Oil can also expire if it’s not replaced for a long time. This happens when the viscosity of the oil decreases, diminishing the lubricating effect and carrys a large number of impurities, increasing the mechanical wear and tear, and may even cause internal damage to the engine. To ensure the health of the car, manufacturers install a maintenance reminder during production (the oil light). When the vehicle reaches a certain mileage or date, the maintenance indicator on the instrument will light up or a maintenance reminder message will appear to remind the owner to carry out an oil change.


After the oil has been changed, the vehicle needs to be reset for a new cycle, if this is not done, the maintenance light will not go out.


Below are the steps to run an oil reset on a Mercedes Benz.

1. Select the "Maintenance" menu.

2. Select "Reset maintenance light".

3. Select the model "Mercedes".

4. Make sure the ignition is switched on and click "OK".

5. Check the VIN number of the vehicle and click "OK".

6. Select "Passenger car".

7. Select "Software Reset".

8. Select "Auto Scan".

9. Verify the vehicle information and click "OK".

10. Select "Oil maintenance light reset with one click".

11. When the prompt "Oil maintenance light reset successfully" appears, the operation is complete.

2. Brake Reset


EPB, also known as Electronic Parking Brake, applies to parking brakes on vehicles. When the brake pads are worn down to a certain level, they need to be replaced otherwise braking will become unsafe.


The electronic parking brake is used to apply or remove the brake by means of an electric motor that controls the retraction or extension of the brake distributor pump. To replace the brake pads, users must retract the brake distributor pump in order to remove the brake pads for replacement. After the brake pads have been replaced, it is also necessary to reset the brake distributor pump, otherwise the electronic handbrake will become inoperative.


Below are the steps to run a brake reset on a Mercedes Benz.

1. Select "Special functions".

2. Select "EPB".

3. Select "Mercedes".

4. Select "Auto Scan".

5. Click on F3 "Installation position start" and wait for the brake distributor pump to retract.

6. Replace the brake pads with new ones.

7. Click on F4 "Deactivate mounting position" to reset the brake distributor pump.

8. The brakereset is complete.

3. SAS Reset


The SAS (Steering Angle Sensor) is used to detect the steering wheel rotation angle, and direction of rotation. It is usually installed in the steering column under the steering wheel or integrated in the steering machine.


After removing or replacing the steering angle sensor, replacing the steering gear or steering-related components, the steering wheel fault light will be on or there will be no power to the steering wheel. The power steering system can show the fault code "steering angle sensor not learned/not calibrated/no basic settings" (the specific fault code is based on the actual vehicle reading), and requires the use of equipment to learn the steering angle sensor.


Below are the steps to run an SAS reset on a GM Cheverolet.

1. Use "Intelligent Diagnosis" to automatically identify the model.

2. Select "EPS" and enter the system.

3. Select "Read Fault Code", to read the fault code ex. "C0460-42 Steering Wheel Corner Sensor - Calibration not programmed".

4. Select "Special functions".

5. Select "Steering wheel steering angle sensor alignment".

6. Follow the device instructions to complete the steering angle sensor learning.

4. BMS Reset


The car battery mainly provides the starting current for the engine and powers the electrical equipment on the car. The battery's life expectancy is generally 3-4 years, and the length of the battery life depends on the condition of the car, road conditions, the owner’s driving habits, and other factors.


When the battery is old or damaged, it needs to be replaced. After replacement, the battery needs to be matched. If it is not matched, the normal functions of the vehicle may be affected, e.g. windows cannot be raised or lowered, seats cannot be adjusted, start/stop functions are not available, etc. A battery fault warning light or message may also appear on the instrumentation.


Below are the steps to run a BMS reset on a Volkswagen.

1. Use the "Intelligent Diagnosis" to automatically identify the model.

2. Select the "Guide function".

3. Select "19 Data bus diagnostic interface".

4. Select the "guidance function".

5. Select "Battery matching".

6. Follow the instructions of the device, enter "Battery capacity", select "Manufacturer" - "Battery type", enter "Serial number ".

7. Confirm that the information entered is correct and complete the battery matching.

5. Throttle Adaptation


The throttle is a controlled valve that controls the air entering the engine. The gas enters the intake pipe and mixes with the petrol to become a combustible mixture, and burns. The throttle adapter is connected to the air filter and to the engine block and is known as the throat of the car engine. The opening of the throttle is controlled by the accelerator pedal.


There are two types of throttles, conventional pull-wire throttles and electronic throttles. The pull-wire throttle does not need to be matched, but the electronic throttle needs to be matched. Usually, after the throttle has been cleaned, butthe vehicle has a high or unstable idle speed, and there are no fault codes in the engine system, then a throttle match is required.


Below are the steps to run a throttle adaptation on a Honda.

1. Use "Intelligent Diagnosis" to automatically identify the model.

2. Select "Engine System" and enter the system.

3. Select "Special functions".

4. Select "Throttle learning".

5. Follow the throttle learning prompts. 

6. The throttle matching is complete.

6. DPF Reset


DPF (Diesel Particulate Filter) is a diesel particulate trap. It is a ceramic filter installed in the diesel engine emission system that captures particulate emissions before they enter the atmosphere. This reduces particulate matter (PM) emissions from exhaust gases.


The DPF works over a long period of time and the gradual increase in particulate matter in the trap can cause an increase in engine back pressure, resulting in a reduction in engine performance.


DPF regeneration has two methods: active regeneration and passive regeneration.

Active regeneration: uses external energy to raise the temperature in the trap, so that the particles ignite and burn, when the temperature in the trap reaches 1022 degrees Fahrenheit (550 ℃), the deposited particles will oxidize and burn, if the temperature does not reach 1022 degrees Fahrenheit (550 ℃), too much sediment will block the trap, then it is necessary to use external energy (such as electric heaters, burners or changes in engine operating conditions) to raise the temperature in the DPF. This causes oxidation and combustion of the particulate matter.

Passive regeneration: The use of fuel additives or catalysts to reduce the ignition temperature of the particulates so that they can ignite and burn at normal diesel exhaust temperatures.


Below are the steps to run a DPF reset on a Ford.

1. Use "Intelligent Diagnostics" to automatically identify the model.

2. Select "Engine System" and enter the system.

3. Select "Special functions".

4. Select "DPF parameter reset", follow the device prompts to complete the parameter reset operation.

5. Select "DPF manual regeneration", follow the device's instructions to complete the DPF regeneration.

7. ABS Bleeding


ABS is an anti-lock brake system that automatically controls the amount of brake force when =a vehicle brakes, so that the wheels do not get stuck or left in a state of motion (slip rate of about 20%) to ensure that the adhesion of the wheels to the ground is at its maximum.



①This maximizes the effectiveness of the brake and shortens the braking time and distance.

②This effectively prevents the vehicle from sliding sideways and tailing during emergency braking and has good driving stability.

③This function allows drivers to steer during emergency braking and maintain good steering maneuverability.

④The car takes less violent friction between the tires and the ground and reduces the wear and tear on the tires.

After replacing the ABS pump, brake sub-pump, and brake fluid pipe, there will be air inside the ABS or brake pipeline, which will make the brake pedal feel soft and weak when you step on the brake. To ensure safe driving and effective braking. The ABS needs to be bled first.


Below are the steps to run an ABS bleeding on a Volkswagen.

1. Use the "Intelligent Diagnosis" to automatically identify the model.

2. Select "03 Brake System" and enter the system.

3. Select "04 Basic system adjustment".

4. Select "Read by list".

5. Select "Brake system exhaust" and follow the prompts.

6. The bleed is complete.

8. Injector Coding


When the solenoid coil is energized, suction is generated, and the needle valve is sucked up to open the spray hole. Fuel is then sprayed out at high speed through the annular gap between the needle valve head and the spray hole, forming a mist that facilitates full combustion.


Usually after replacing the injectors or aligning the positions, the injectors of each cylinder need to be coded or recoded for more accurate control or correction of the fuel injection volume of each cylinder.


Failure to code after replacement may result in the system fault light coming on, unstable engine idling, engine shuddering, engine noise, smoke coming from the engine, or increased fuel consumption.


Below are the steps to run injector coding on a BMW.

1. Use "Intelligent Diagnosis" to automatically identify the model.

2. Select "Engine Control Module" and enter the system.

3. Select "Special functions".

4. Select "Injection rate adjustment".

5. Select "Perform injector volume compensation".

6. Follow the prompts to enter the code values for each cylinder in turn and complete the storage.

7. The injector coding is complete.

9. TPMS Reset


TPMS stands for the tire pressure monitoring system, this system enables real-time automatic monitoring of tire leakage and low air pressure alarm to ensure safety while driving.


TPMS can be divided into indirect and direct systems.

Indirect tire pressure monitoring systems need to compare the speed difference between tires through the wheel speed sensor of the car's ABS system to monitor the tire pressure. This is a passive type of TPMS.

Direct tire pressure monitoring systems use pressure sensors mounted on the tires to measure their air pressure, using a wireless transmitter to send the pressure information from inside the tires to a system on a central receiver module, which then displays the tire pressure data. The system alerts when the tire pressure is low or leaking. It is an active type of TPMS.


When a vehicle with an indirect tire pressure system is fitted with a tire pressure fault light to alert of low or leaking tire pressure, the light can be extinguished by using your scan tool’s reset function or by resetting it directly on the vehicle after the pressure has been increased to a standard value, and the tire has been repaired.


For vehicles fitted with direct tire pressure systems, after replacing the tire pressure sensor, TPMS module, receiver, or aligning the tires, a special TPMS tool is required to learn the sensor ID.


Below are the steps to run a TPMS reset on a Volkswagen. 

1. Use the "Intelligent Diagnosis" to automatically identify the model.

2. Open the bonnet according to the device's instructions and continue to the next step (as some 2019 models and later models have a network firewall, when performing basic settings and matching and other special functions, you need to close the firewall first, by opening the bonnet you can close the vehicle firewall).

3. Scan the entire vehicle system, select "ABS_03" and enter the system, read the fault code "C102D00 Tire pressure warning".

4. Go back, select "Online Secure Login", automatically get the login code, select "40168" and click login, login successfully.

5. Go back, select "Basic system adjustment" to enter the main interface of basic settings.

6. Check "Reset to factory settings for tire pressure monitor" and confirm.

7. Click "Adjust", the basic setting status will show correct completion.

8. The fault code is cleared successfully, the tire pressure light is off, the tire pressure reset is completed.

10. IMMO


A car’s anti-theft system is divided into entry anti-theft and start anti-theft. Entry theft prevention means preventing criminals from entering into the car (this deals with the car’s door locking mechanisms); start theft prevention means preventing criminals from starting the car if they’ve broken in  (this deals with hot wiring and fake keys).


In order to prevent the car from being started by fake keys, the anti-theft key matching function enables the immobilizer control system on the car to identify and authorize the key before the car can be entered and started normally.


Car keys can usually be divided into ordinary remote keys, semi-intelligent keys, and intelligent keys.


Below are the steps to run IMMO matching on a Hyundai.

1. Use the "Smart Diagnosis" to automatically identify the model.

2. Select "SMK (Smart Key) System" and enter the system.

3. Select "Special functions".

4. Select "Smart Key Matching".

5. Follow the instructions.

6. The IMMO Program is completed.

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