BMW 3 Series 2020-2023 Coolant level User Manual
Keeping the right amount of coolant in your 2020–2023 BMW 3 Series is important for the best operation and longevity of the car. A carefully balanced cooling system keeps the engine from burning and controls the temperature of this luxury compact sedan, which is known for its precise engineering and exciting driving experience. Having the right amount of coolant in the engine helps keep it within its safe operating temperature range, which keeps it running efficiently and lowers the risk of damage. Checking and maintaining the coolant amount on a regular basis is an important part of owning a BMW during these model years. It not only helps the car’s health but also makes sure that driving is safe and fun.
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Coolant level
General information
Depending on the motorization, there are up to two coolant reservoirs in the engine compartment. Check and add the coolant levels on a regular basis.
The top up coolant BMW 3 series level is indicated using the Max mark in the filler neck of the coolant reservoir.
Additional information:
For an overview
Let the engine cool down. Opening the hood.
Checking the coolant level
- Let the engine cool down.
- Opening the hood.
- Turn the lid of the coolant reservoir slightly counterclockwise to allow any excess pressure to dissipate, then open it.
- Open the coolant reservoir lid.
- The coolant level is correct when it is just below the maximum mark in the filler neck.
- Close the lid.
Adding coolant
- Let the engine cool down.
- Opening the hood.
- Turn the lid of the coolant reservoir slightly counterclockwise to allow any excess pressure to dissipate, then open it.
- Open the coolant reservoir lid.
- If the coolant is low, slowly add coolant up to the specified level; do not overfill.
- Close the lid.
- Have the cause of the coolant loss eliminated as soon as possible.
Disposal
Comply with the relevant environmental protection regulations when disposing of coolant and coolant additives.
Washer fluid
General information
All windshield washer jets are supplied from one tank.
Use a mixture of tap water and windshield washer concentrate. If desired, a windshield washer concentrate containing antifreeze can be used.
Recommended minimum fill quantity:
0.2 US gal/1 liter.
Safety information
Warning
Some types of antifreeze can contain harmful substances and are flammable. There is a risk of fire and an injury hazard. Follow the instructions on the containers. Keep antifreeze away from ignition sources. Do not refill operating materials into different bottles. Store operating materials out of reach of children.
United States: the washer fluid mixture ratio is regulated by the U.S. EPA and many individual states; do not exceed the allowable washer fluid dilution ratio limits that apply. Follow the usage instructions on the washer fluid container.
Use of BMW’s Windshield Washer Concentrate or the equivalent is recommended.
BMW refill coolant, locate the coolant reservoir, open the cap when the engine is cool, and add the appropriate BMW-approved coolant mixture until it reaches the “MAX” level.
Warning
Washer fluid can ignite and catch fire on contact with hot engine parts. There is a risk of in‐jury or risk of damage to property. Only add washer fluid when the engine is cooled down. Next, fully close the lid of the washer fluid reservoir.
NOTICE
Silicon-containing additives in the washer fluid for the water-repelling effect on the windows can lead to damage to the washing system. There is a risk of damage to property, among other potential damage. Do not add silicon-containing additives to the washer fluid.
NOTICE
Mixing different windshield washer concentrates or antifreeze can damage the washing system. There is a risk of damage to property, among other potential damage. Do not mix different windshield washer concentrates or anti‐freeze. Follow the information and mixture ratios provided on the containers.
Overview
The washer fluid reservoir is located in the engine compartment.
Maintenance
Vehicle features and options
This chapter describes all standard, country-specific, and optional features offered by the series. It also describes features and functions that are not necessarily available in your vehicle, e.g., due to the selected options or country versions. This also applies to safety-related functions and systems. When using these functions and systems, the applicable laws and regulations must be observed.
BMW maintenance system
The maintenance system provides service notifications and thereby provides support in maintaining road safety and the operational reliability of the vehicle.
In some cases, the scopes and intervals of the maintenance system may vary according to the country’s version. Replacement work, spare parts, fuels and lubricants, and wear materials are calculated separately. Further information is available from a dealer’s service center or another qualified service center or repair shop.
FAQ
A1: To check the coolant level in your BMW 3 Series, locate the coolant expansion tank, which is usually translucent. Ensure the engine is cool, then inspect the tank’s level indicator, typically marked with “MIN” and “MAX” levels.
A2: It’s a good practice to check the coolant level regularly, ideally when the engine is cold, to ensure it remains within the recommended range.
A3: BMW recommends using their specific BMW-approved coolant or a compatible coolant that meets their specifications. Refer to your owner’s manual for precise details.
A4: It’s generally not recommended to mix different types of coolant. Stick to the same type and brand of coolant to maintain optimal performance and prevent potential issues.
A5: If the coolant level is below the “MIN” mark, add the appropriate BMW-approved coolant to bring it up to the “MAX” level. Be sure to follow the manufacturer’s recommendations.
A6: BMW typically recommends changing the coolant every 4 years, but it’s advisable to consult your owner’s manual for the manufacturer’s specific maintenance schedule.
A7: It’s best to check the coolant level when the engine is cold to avoid potential burns or inaccurate readings.
A8: Coolant helps regulate the engine’s temperature, preventing it from overheating and maintaining optimal operating conditions.
A9: Signs of a coolant leak may include visible puddles under the car, a sweet smell inside the cabin, or an engine temperature gauge reading higher than normal. Inspect the engine bay for visible leaks.
A10: Yes, low coolant can lead to engine overheating, which can result in reduced performance and potential damage. It’s crucial to maintain the correct coolant level.
A11: It’s not recommended to drive with significantly low coolant levels, as it can lead to engine overheating and damage. Top up the coolant before driving if the level is low.
A12: If you notice consistent coolant loss, it’s essential to have your vehicle inspected by a BMW-certified technician to identify and address any underlying issues.
A13: In emergencies, you can use distilled water to top up the coolant temporarily, but it’s crucial to replace it with the appropriate coolant as soon as possible.
A14: Regularly check the coolant level, adhere to maintenance schedules, and use the recommended BMW-approved coolant to prevent coolant-related problems.
A: The 2020 BMW 330i coolant location is typically located in the engine bay, on the passenger side. It is a translucent tank with “MIN” and “MAX” markings, and it’s used for monitoring and topping up the coolant level in the vehicle.
Useful Link
View Full User Guide: BMW 3 Series 2020-2023 User Manual
Download Manuals: https://www.bmwusa.com/owners-manuals.html