Introduction Proper vehicle maintenance is crucial for optimal performance and a prolonged lifespan. One of the often overlooked areas of maintenance is cleaning the radiator fins. These fins play a pivotal role in preventing your car's engine from overheating. However, they can collect dirt and debris, obstructing airflow, and reducing their efficiency. That's why regular cleaning of the radiator fins is essential. Here's a step-by-step guide on how you can clean your vehicle's radiator fins safely and effectively. Safety Precautions Before you start, remember that safety is paramount. Always ensure the engine is off and completely cool before working on...

Introduction The coolant reservoir, also known as the coolant expansion tank, plays a critical role in maintaining your vehicle's engine temperature. It's a place where the coolant resides when it's not circulating in the engine. But what happens when this reservoir starts overflowing? This article will delve into the reasons behind an overflowing coolant reservoir and how to troubleshoot it. Why is Your Coolant Reservoir Overflowing? Faulty Radiator Cap The radiator cap is designed to maintain a specific pressure within the cooling system. If the cap is faulty or worn out, it may not hold the pressure correctly, causing the...

1. Poor Fuel Economy https://cdn.shopify.com/s/files/1/0261/5223/9181/files/Lean-vs-Rich.webp?v=1683003830 When your engine runs rich, it means that there's too much fuel in the combustion chamber relative to the air. This can cause the engine to consume more fuel than necessary, leading to poor fuel economy. 2. Excessive Emissions A rich fuel mixture produces higher levels of unburnt hydrocarbons (HC) and carbon monoxide (CO) in the exhaust. This can result in a strong, unpleasant odor and contribute to air pollution. 3. Spark Plug Fouling The excessive fuel in the combustion chamber can lead to fouling of the spark plugs. This occurs when fuel deposits form...

Spring is the perfect time to give your car some much-needed TLC, and one of the most important things you can do is check your brakes. Your brakes are one of the most important safety features of your vehicle, and it's important to make sure they're in good working order. Listen for any strange noises: If you hear any grinding, squealing, or other strange noises when you apply the brakes, it could be a sign that your brake pads are worn down and need to be replaced. It's important to have this issue addressed as soon as possible to prevent...

As a car owner, you might have noticed a change in the sound of your vehicle, a decrease in fuel efficiency, or an increase in emissions. These issues can be caused by an exhaust leak, which can lead to serious problems if left unchecked. In this beginner's guide, we'll show you how to diagnose and fix an exhaust leak using common household items and some creativity. Listen for Unusual Noises One of the first signs of an exhaust leak is a change in the sound of your car. You may hear hissing or popping noises coming from under the hood...

Model: 2019 Audi A3. Fault phenomenon: The cruise control function fails. Troubleshooting:  (1) Read the trouble code with the ODIS diagnostic instrument: 01—engine control unit record—U041600—ESP untrusted signal (active/static). (2) According to the test plan, it is necessary to compare the configuration of the SVM control units for 01-engine control unit J623 and 03-ABS control unit J104. After the online SVM comparison, it is prompted that the two control units are configured correctly and do not need to be changed. (3) At this time, the ODIS diagnostic instrument has been unable to provide the test plan for maintenance and can...

Model: Mercedes-Benz E300, equipped with 274.920 engine. Driving mileage: 12,415 miles Fault phenomenon: The instrument prompts “Blind Spot Assist Has Stopped Working”. Troubleshooting: Connect the XENTRY diagnostic instrument and conduct a quick test. The integrated radar sensor in the left rear bumper of the B92/11 has set a fault code: C110100 radar sensor 1 has a functional failure, A+S. Check the car’s registration card to confirm that the car is equipped with a blind spot assist system (code 234). The blind spot assist system uses short-range radar to monitor the rear and side areas of the vehicle, and if necessary,...

Model: e-tron System: Transmission Year: 2019 Driving mileage: 9,383 miles Issue: The driver's guide in the instrument cluster displays "Coolant level too low" and the coolant indicator light illuminates in red. Troubleshooting: First check that the coolant level in the expansion kettle is below the lower limit mark. Connect the diagnostic instrument to read the fault code, there is a fault code in the temperature management system control unit J1024 (address code C5): the coolant is insufficient, and the low liquid level of the sensor is displayed. Next troubleshooting for the coolant leak revealed excess coolant inside the front motor....

Model: 2021 Mercedes-Benz GLA200 Issue: The meter displays a white text prompting "Auxiliary battery failure". Troubleshooting: The problem persists, and there is no unusual sensation while driving. Connect the diagnostic instrument to do a brief test and discover that the N73 has set a fault code for the current state: the B21DC01 electronic ignition switch's buffer battery is malfunctioning. Check the vehicle registration card; this vehicle has CODE429, is equipped with a 700.4 seven-speed dual-clutch automatic gearbox, and the parking pawl lifting solenoid valve L21 is part of the electromechanical parking pawl placed on the dual-clutch transmission's casing (as shown...

Model: XC60 System: Electrical Year: 2019 Issue: The air bag light on the instrument lights intermittently.  Troubleshooting: The owner of the car reported that airbag light of the car was on, and sometimes the braking was not easy to use. We heard that he had been to the repair shop for inspection before, yet no problem was found. The car did not light up after being promoted to a higher level, and it has not been used very much recently. We connected the diagnostic instrument and discovered that different modules such as airbag SRS, instrument DIM, wiper switch, air conditioning...

A few days ago, a 2016 BMW 316Li was sent here by our friends for maintenance. This car is equipped with an N13 engine, and has two fault codes: cylinder No.3 misfire detected and cylinder No.3 injection device off. The ignition coil, spark plugs, and injectors have all been replaced, and the engine has also been disassembled. It is said that a valve is bent and should be replaced, but the problem remains still as the cylinder No.3 misfire. They had already tested the cylinder pressure, and there’s no significant difference between the 4 cylinders, all around 1100kPa. During the...

Car: Audi Model: Q5 System: Engine Fault phenomenon: The cruise control function can be activated when idling, and the speed of the cruise control can also be increased or decreased (as shown in Figure 1), but the cruise control function cannot be activated when the vehicle is driving.   Figure 1 Diagnosis: The test drive finds that the cruise control function and the engine start-stop function is not available. Check the relevant system with a diagnostic tool, we didn't find any trouble codes. Looking at the reason preventing the engine from stopping is the "diagnostic interface", the diagnostics have no...