Why is the car air conditioning not heating?

2 Answers
LaHarrison
08/27/25 7:36am
There are several reasons why the car air conditioning is not heating: 1. The vehicle has just started, and the engine temperature has not yet risen. It will work after the engine warms up. 2. Insufficient coolant, which can also cause the car air conditioning not to heat. Adding coolant will solve the problem. 3. A damaged water pump, which causes a failure in the coolant circulation system, can also lead to the car air conditioning not heating. Replacing the water pump will fix the issue. 4. A clogged heater core, which prevents the hot water from circulating inside the engine to the core, resulting in the air conditioning not heating. Cleaning the heater core will resolve this. 5. A faulty radiator fan. If the radiator fan runs continuously, it can prevent the coolant in the radiator from heating up, causing the air conditioning not to heat. Inspecting and repairing the radiator fan will solve the problem.
Was this review help?
7
2
Share
LaDylan
09/09/25 6:22am
I'm the type who loves tinkering with my car. If the AC isn't heating, it might be related to the coolant system. A clogged heater core is a major issue - if coolant can't flow through it, heat won't transfer to the cabin. It could also be a stuck thermostat causing improper water temperature control, or a broken blower motor failing to blow warm air. A faulty temperature control switch might also lead to inaccurate temperature regulation. First, check the coolant level and top it up if low. Set the AC to heat mode to rule out operator error. Don't tough it out in winter - extreme cold affects driving safety. I recommend visiting a repair shop soon for professional diagnostics, and don't neglect regular AC maintenance habits.
Was this review help?
8
0
Share
Expand All
More Forum Discussions

What brand is Genesys tires?

Genesys is a tire series under the Shandong Wanda Boto Tire brand. Shandong Wanda Boto Tire Co., Ltd. is a wholly-owned subsidiary of Wanda Group, located in the Wanda Group High-Tech Industrial Park, covering an area of 320,000 square meters, with a factory area of 170,000 square meters. It is one of the large-scale enterprises in China specializing in the production of all-steel radial tires, semi-steel radial tires, engineering machinery radial tires, and light truck tires. Shandong Wanda Boto Tire Co., Ltd. mainly operates high-end sports series tires, mid-range comfort tires, ultra-long wear-resistant series tires, SUV off-road series tires, winter series tires, and commercial vehicle series tires. Tires are often used under complex and harsh conditions, enduring various deformations, loads, forces, and high and low temperatures during driving. Therefore, they must have relatively high load-bearing performance, traction performance, and cushioning performance, as well as high wear resistance and flex resistance, along with relatively low rolling resistance and heat generation. They are in direct contact with the road surface and work together with the vehicle suspension to cushion the impact during driving, ensuring good ride comfort and smoothness, maintaining good adhesion between the wheels and the road surface, improving the vehicle's traction, braking, and passing performance, and bearing the weight of the vehicle. Wanda Boto Tire maintenance methods: Increase awareness of tire safety and inspect tires more frequently. Regularly correct wheel balance; unbalanced wheels can cause high-frequency oscillations during high-speed driving, leading to uneven tire wear. Regularly rotate tires; to maintain even wear on the tires of the same vehicle, rotate the tires every 5,000 kilometers. In daily use of Wanda Boto tires, pay attention to the following points: Regularly check the tire surface for cracks, deformations, and other defects. Due to driving wear, the tread grooves gradually become shallow. If the tread is worn flat, it will lose its drainage and anti-slip functions, significantly reducing the vehicle's performance. Small cracks may pose a risk of tire blowouts during high-speed driving. Additionally, immediately remove pebbles from the grooves. Park on level ground as much as possible. Avoid parking on roads with thick, sharp, or pointed stones. Do not park near or in contact with petroleum products, acids, or other materials related to rubber deterioration. After parking, do not turn the steering wheel, as this will accelerate tire wear. Do not splash water to cool down. In hot weather or during high-speed driving, tires are prone to overheating, and the pressure will increase. In such cases, stop to let the tires cool down. Do not release air to reduce pressure or splash water to cool down, as this can cause abnormal aging of the tread rubber. Avoid sudden braking. Try to minimize frequent use of brakes and emergency braking to prevent accelerated tread wear due to dragging between the tires and the ground.
4
1
Share

What materials are needed for the first maintenance?

The items required for the first maintenance include: driver's license; maintenance manual; warranty manual; owner's ID card; vehicle's registration certificate; vehicle's purchase invoice. Bring these to the designated first maintenance facility for the vehicle's initial service. Important note: Make an appointment with the 4S shop in advance. The first maintenance refers to the initial service after a new car has been driven, with the specific time varying by vehicle, generally after driving 1,000 to 3,000 kilometers. It is essential to attend the first maintenance promptly, neither in advance nor delayed. The completion of the first maintenance marks the end of the car's break-in period, allowing it to be driven under standard loads and normal speeds as required by the vehicle. The timing for the first maintenance is calculated from the date of vehicle pickup. There are two indicator values for the first maintenance: mileage and time. Whichever comes first will be the standard. The first maintenance items include: changing the engine oil and oil filter, cleaning the air filter, checking various fluid levels for normalcy, inspecting the generator belt and wiper blades for damage, checking tire pressure for normalcy, and examining tires for damage or bulges. Time: Completing all tasks takes approximately 2 hours. The most crucial aspect of the first maintenance for a new car is changing the engine oil and oil filter. When changing the engine oil, the oil filter must also be replaced. The selection of engine oil must refer to the "Vehicle Usage and Maintenance Manual," as different vehicle models specify different oil grades. Maintenance precautions: Do not rinse the interior of the car body with water: Many people clean their cars during holidays, washing the body with water and wiping it with a cloth. It is important to note that the interior of the car body should not be directly rinsed with water. If the floor mats are dirty, use a vacuum cleaner or take them out, scrub them with a brush and detergent, dry them, and then put them back. There are many drainage holes under the rubber mats on the floor of the driver's compartment. If water enters, it will not dry naturally but will flow through the holes to areas like the transmission, causing erosion and corrosion. The best practice is to clean with a vacuum cleaner and then wipe with a cloth to prevent water accumulation. Do not mix different brands of antifreeze: When the antifreeze in the car is low, it is recommended to drain the antifreeze and add the same brand from the beginning. Since antifreeze brands differ, their chemical properties vary significantly. Various functional additives may corrode others. Different brands of antifreeze use different additives, so they should not be mixed to avoid unnecessary trouble. Do not lubricate tire bolts and nuts: When the bolts on a car become rusty during driving, they are often oiled to function properly again. To prevent rust on wheel bolts and nuts, some people apply lubricant, but this poses a safety risk. When the car is driven at high speed, the bolts and nuts may loosen or even fall off, leading to driving malfunctions. Do not press the accelerator when starting an electronic fuel injection car: The starter of an electronic fuel injection car differs from that of a regular car. Its fuel injection control device can automatically adjust the fuel supply based on the starter's temperature and operating conditions, ensuring a smooth start.
13
5
Share

What does window convenience control mean?

Window convenience control refers to a window control system that allows the car window glass to be raised or lowered to position with one-touch control. Generally, mid-to-high-end models are equipped with one-touch up/down window functions, mainly for the convenience of drivers and passengers, avoiding the distraction caused by operating the windows manually, thereby improving safety. Below is the usage method for one-touch window control: Cars equipped with one-touch window control have window switches with two positions. The first position works like a regular power window, requiring the user to hold the switch until the window reaches the desired position, then release to stop. The second position only requires a single press and release, after which the window will automatically open or close completely.
14
1
Share

What Does EVO Stand For?

Evo stands for the Range Rover Evoque. Below are the specific details about the Range Rover Evoque: 1. Vehicle Positioning: The Range Rover Evoque is the most compact SUV model under the Land Rover brand. As the production version of the Land Rover LRX concept car, it is available in both three-door and five-door versions. 2. Powertrain: The Range Rover Evoque is equipped with a turbocharged 2.0TSi4 engine featuring direct injection technology, delivering a maximum power output of 240 horsepower, paired with an AWF-21 six-speed automatic transmission. 3. Suspension: It features the MagneRide adaptive dynamic suspension and full-time four-wheel drive, with the Terrain Response system ensuring off-road performance.
10
2
Share

Why Does Driving in Winter Consume More Fuel?

There are several main reasons why driving in winter consumes more fuel: 1. The viscosity of engine oil used for winter lubrication increases, which adds to the engine load. 2. The outdoor temperature is lower in winter, so the engine takes longer to reach its optimal operating state after starting. As a result, fuel consumption tends to be higher compared to other seasons. 3. Driving before the engine reaches its operating temperature prevents the fuel from burning completely, leading to carbon buildup and higher fuel consumption. 4. Idling to warm up the engine increases fuel injection when the engine temperature is below the normal operating level.
2
1
Share

What does T-Box failure mean?

T-Box failure refers to a problem with the vehicle's T-BOX in the telematics system. To determine the specific fault information, it is necessary to visit a 4S dealership to check the fault codes. In most cases, the issue is caused by a malfunctioning radar sensor, and replacing the radar sensor can resolve the problem. Here is some information about automotive radar: The full name of automotive radar is "Reverse Anti-Collision Radar" or "Parking Assistance Radar," which is used to detect the distance between the vehicle body and other vehicles or obstacles. It alerts the driver through sound or a display screen about the surrounding environment, helping to avoid unnecessary collisions when moving or reversing the vehicle.
14
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.