What causes uneven heating in the BMW 5 Series with one side hot and the other cold?

1 Answers
DeLily
07/29/25 12:06pm
The reason for uneven heating in the BMW 5 Series, where one side is hot and the other cold, is: incorrect adjustment of the temperature control knob. Taking the 2021 BMW 525 as an example, it belongs to the mid-to-large-size car category, with body dimensions of: length 5106mm, width 1868mm, height 1500mm, wheelbase 3105mm, fuel tank capacity 68l, and curb weight 1705kg. The 2021 BMW 525 features a double-wishbone independent front suspension and a multi-link independent rear suspension. It is equipped with a 2.0L turbocharged engine, delivering a maximum horsepower of 184ps, maximum power of 135kw, and maximum torque of 290nm, paired with an 8-speed automatic transmission.
Was this review help?
13
5
Share
More Forum Discussions

How to Use Car Air Conditioning Correctly?

Correct methods for using car air conditioning are: 1. Turn on the AC switch and adjust the air vent selection knob. When cooling, direct the vents upward; when heating, direct them downward. 2. Adjust the fan speed switch. At low speeds, set the fan to a low gear to avoid insufficient power generation and cooling. 3. Adjust the air recirculation mode. Upon entering the car, first open the windows for ventilation and activate the external circulation to expel hot air. Switch to internal circulation once the cabin temperature drops. 4. Adjust the temperature control knob. Car air conditioning refers to the climate control system installed in vehicles, which cools, heats, ventilates, and purifies the cabin air, providing a comfortable environment for passengers, reducing driver fatigue, and enhancing driving safety.
18
2
Share

How to Clean a Car Radiator?

Cleaning a car radiator involves the following steps: 1. Remove the front grille mesh, then dismantle the hood lock assembly in the middle to fully expose the condenser; 2. Use an air gun to blow away debris like fluff and loose dust—ideally, clean from inside the engine compartment outward if possible; 3. Rinse with water, preferably at a professional car wash facility for expert cleaning. The car radiator is a critical component of water-cooled engines, serving as a key part of the cooling circuit that absorbs heat from the engine block to prevent overheating.
19
4
Share

How Often Should CVT Fluid Be Changed?

CVT fluid should be changed every 3 years or 60,000 kilometers. Over time, the transmission fluid becomes dirty and its viscosity decreases, which compromises its ability to protect the transmission. This can lead to symptoms such as rough shifting, abnormal acceleration, increased noise, and in severe cases, premature transmission failure, shortening the transmission's lifespan. Continuously Variable Transmissions (CVTs) allow for a continuous change in the gear ratio, ensuring optimal matching between the drivetrain and engine conditions. This improves the vehicle's fuel efficiency and power performance while enhancing the driver's ease of operation and passenger comfort.
8
5
Share

Why won't the car start after being parked for 6 days?

If a car won't start after being parked for 6 days, it is likely due to insufficient battery power, excessive carbon buildup in the idle motor, intake tract, intake valves, and combustion chamber; or it could be caused by issues with the fuel injectors, such as leaks or excessive carbon deposits, leading to an overly lean air-fuel mixture during startup and preventing the engine from starting. It is advisable to promptly contact a 4S shop or repair shop for inspection and maintenance. Leaving a car unused for extended periods not only results in starting issues but also causes damage to the exterior paint. Long-term outdoor parking exposes the vehicle to wind, rain, and sunlight, and without regular maintenance, the paint surface can become corroded and oxidized. Therefore, when parking the vehicle for an extended time, it is recommended to cover it or park it in a cool, dry place, and perform regular maintenance.
14
5
Share

What are the basic components of a car body structure?

The basic structure of a car body consists of the body shell, doors, windows, front sheet metal components, interior and exterior trim parts, body accessories, seats, as well as ventilation, heating, air conditioning, and climate control systems. The body shell serves as the mounting foundation for all body components and typically refers to the rigid spatial structure formed by major load-bearing elements such as longitudinal beams, cross members, pillars, and their connected sheet metal parts. Doors are mounted on the body shell via hinges and feature complex structures, playing a crucial role in ensuring the functional performance of the vehicle body. These sheet metal components form the spaces that accommodate the engine, wheels, and other parts.
2
1
Share

How to Determine the Condition of a Car Battery?

Use a battery discharge tester. Clamp the positive and negative test leads of the tester to the corresponding battery terminals, then press the test button and observe the readings on the tester's display. If the display shows a voltage above 9V, it indicates the battery is in good condition. If the voltage is below 9V but the needle remains steady at a certain value, it means the battery is undercharged and requires recharging. If the needle slowly drops, it indicates an internal short circuit in the battery.
12
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.