Keep your face and body as far away as you can.
If you are stuck on the side of the road and have no choice but to add coolant, remove the expansion cap very slowly. Let the engine cool down for at least thirty minutes to avoid getting burned. The coolant system pressurizes and will still be hot if you remove the cap right after the engine runs. Always check the BMW coolant level when the car is cold, and the engine is turned off.It operates differently than most coolant systems that have an overflow reservoir. BMW uses a closed pressurized coolant system with an expansion tank.If you constantly add coolant to your BMW or add more than one gallon of antifreeze, you may have a major coolant leak or a serious engine problem, such as a blown head gasket. If you add more than one quart, you may have a coolant leak.To make the float move from the minimum level to the maxim, you need less than a quart of coolant. Typically, you don’t need to add more than one quart/liter to top off the system.Also, clean the cap, as there can be a buildup of solids, not allowing the rubber to seal the system and cause a leak. The cap may not be holding the pressure and could be leaking coolant.BMWs have specific coolant requirements to prevent buildup and corrosion of aluminum components, therefore do not use off-the-shelf antifreeze without checking compatibility. The most commonly used BMW engine coolant (PN: 82141467704) or a coolant that meets the requirements listed in your owner’s manual. Some models may have different coolant recommendations based on the region they are sold and manufactured.
#Coolant cap bmw manual
It’s important to note that checking the owner’s manual of your specific BMW model and year is always recommended. Rember, the level reading should be performed on a cooled-down engine for proper measurement. A schematic diagram is stamped on top of the coolant reservoir, illustrating the minimum and maximum level. In other words, the BMW coolant level is correct if the red float is aligned with the top edge of the filler opening. If the float is sticking up, your BMW coolant level is full. If the float is down, you need to add coolant.
#Coolant cap bmw full
The level is full when the bottom of the float reaches flush with the top of the cap. The red float may have two balls, indicating the low and the second indicating the full level. It will allow residual pressure to release without blowing off the cap.ĭetermine the coolant fluid level. Some BMW models, such as the 3-series, have the coolant expansion reservoir on the engine bay’s right side. This is the typical coolant expansion reservoir location.
Caution: Risk of scalding!įollow these easy steps to check the coolant level on any BMW.
#Coolant cap bmw series
Fitment includes 99% of all BMW with a coolant Reservoir tank from the E series forward, meaning then fit even the brand New G8X M3/4 with the S58, all B58, etc.
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