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• 126.

  How long does it take for car to relearn throttle?

  The time it takes for your car to relearn the throttle can vary depending on the specific make and model of your vehicle and the type of relearn process being performed. In some cases, it may only take a few minutes of driving for a car's electronic control unit (ECU) to adapt to changes in throttle behavior or sensor inputs. In other cases, however, it may take longer for the ECU to fully relearn and optimize throttle response, perhaps an hour or more of driving in a variety of conditions.
  
  It’s worth noting that modern vehicles are equipped with advanced engine management systems that continuously monitor and adjust various parameters, including throttle response, based on input from sensors throughout the vehicle. If you are experiencing throttle response or performance issues, it is best to consult your vehicle's owner's manual or a qualified mechanic for specific guidance on relearn procedures or troubleshooting steps.
  
  
  
• 127.

  Can I drive after adding coolant?

  If you have added coolant to the vehicle's cooling system to the proper level, you can usually drive the car after that. However, it is important to monitor the coolant level and keep an eye on the temperature gauge to ensure that the engine is operating within the normal temperature range.
  After adding coolant, please note the following:
  

  ① Check for leaks: Before driving, check around the vehicle for signs of coolant leaks. If any leaks are found, fix them before driving to prevent further coolant loss and potential engine damage.

  ② Monitor temperature: Pay attention to the thermometer on the dashboard while driving. If the thermometer shows that the engine is overheated, please stop the car in a safe place and turn off the engine immediately. Continuing to drive with an overheated engine may cause serious damage.

  ③ Recheck the coolant level: After driving a short distance, let the engine cool down and then check the coolant level again. It is normal for the coolant level to drop slightly as the bubbles in the system are cleared. If necessary, add more coolant to maintain the proper level.

  ④ Pay attention to warning lights: If your vehicle has a coolant temperature warning light or any other warning lights related to the coolant system, pay attention to them while driving. If any warning lights illuminate, address the issue immediately to avoid potential engine damage.

  
  

  Overall, as long as you add the correct type of coolant and bring the level to the proper range, it should be safe to drive after adding coolant. However, always exercise caution and monitor your vehicle's temperature and warning lights to ensure the engine remains within a safe operating range. If you are unsure or have concerns, it is best to consult a mechanic or refer to your vehicle's manual for guidance.
  
• 128.

  Can low coolant cause no air?

  Low coolant levels do cause air to be trapped in the cooling system. When the coolant level is below the recommended level, air pockets may form within the system. These air pockets disrupt the flow of coolant, causing insufficient cooling and possibly overheating.
  Additionally, if the coolant level is too low, the coolant pump may make the problem worse by sucking air in along with the remaining coolant. This draws additional air into the system, further affecting its effectiveness in cooling the engine.
  In summary, while low coolant levels may not directly cause air to enter the cooling system, they can create conditions for air pockets to form within the system. Maintaining proper coolant levels is critical to minimize the risk of air entrapment and ensure effective engine cooling.
  
• 129.

  How do I know if my coolant system has air?

  There are several signs that may indicate there is air in your vehicle's cooling system:
  

  ① Overheating: One of the most common signs of air in the cooling system is an overheated engine. Air pockets interfere with the flow of coolant, causing insufficient cooling and engine overheating.

  ② Coolant loss: If you notice a gradual loss of coolant without any obvious leaks, it may be a sign that air is replacing the coolant in the system.

  ③ Gurgling or bubbling noises: Air bubbles in the coolant system can produce gurgling or bubbling noises, especially when the engine is running or shortly after it is shut down.

  ④ Fluctuating Temperature Gauge: Air pockets can cause the temperature gauge to fluctuate erratically as the coolant flow becomes disrupted.

  ⑤ Poor heater performance: Air in the cooling system prevents the heater core from receiving an adequate supply of hot coolant, resulting in reduced heating performance inside the vehicle.

  If you experience any of these symptoms, it is best to check the coolant level and inspect the coolant system for signs of air. The coolant system may need to be bled to clear any trapped air and restore normal coolant circulation.

• 130.

  Is it OK to drive with TPMS light on?

  No, it's not okay to drive with the Tire Pressure Monitoring System (TPMS) light on. The TPMS light indicates that there's an issue with the tire pressure in one or more of your vehicle's tires. Driving with low tire pressure can lead to reduced fuel efficiency, decreased tire lifespan, and, more importantly, compromised safety. Underinflated tires can affect handling, braking, and stability, increasing the risk of accidents, especially in emergency maneuvers or adverse road conditions. Therefore, it's essential to address the issue promptly by checking and adjusting the tire pressures or seeking professional assistance to identify and fix any underlying problems causing the TPMS light to illuminate.