How to test,remove and install Coolant Level Sensor and Coolant Temperature Sensor in cooling system on BMW 325i?

A BMW dealer or specialist should test the radiator outlet thermostatic switch, located in the radiator lower hose. It should only be removed when the engine and radiator are cold. Disconnect the battery cable before removing the switch and use a plug to prevent foreign matter from entering the radiator. The coolant temperature sensor is on the cylinder head's front side. Remove the air intake duct and disconnect the wiring before unscrewing the sensor. Apply sealant to the threads before reinstallation. The coolant level sensor is in the coolant expansion tank base. Disconnect the electrical connector and remove the bolts to access the sensor. Rotate it counterclockwise for removal. Installation is the reverse of removal.

Genuine BMW 325i Coolant Level Sensor

Radiator Tank Switch

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4 Coolant Level Sensors found

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BMW 325i Fluid Level Sensor
Part Number: 17137553919
$35.03 MSRP: $49.59
You Save: $14.56 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Level Switch, Coolant
- Replaces: 17-13-7-800-097, 17-11-7-546-548, 17-13-7-524-812, 17-13-7-532-124, 17-11-7-526-845
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2006 BMW 325i | Sedan M54 Engine(E46), Sedan M56 Engine(E46), Sedan(E46), Sedan(E90), Wagon M54 Engine(E46), Wagon M56 Engine(E46), Wagon(E46)
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BMW 325i Levelling Switch Radiator
Part Number: 61311384739
$79.01 MSRP: $92.67
You Save: $13.66 (15%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Level Sensor
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1992-1995 BMW 325i | Convertible(E36), Sedan(E36)
View related parts
BMW 325i Levelling Switch Radiator
Part Number: 61311378320
$79.01 MSRP: $92.67
You Save: $13.66 (15%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Level Sensor
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1987-1992 BMW 325i | Convertible(E30), Coupe(E30), Sedan(E30)
View related parts
BMW 325i Levelling Switch Radiator
Part Number: 61318360855
$79.01 MSRP: $92.67
You Save: $13.66 (15%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Level Sensor
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1992-1995 BMW 325i | Convertible(E36), Sedan(E36)

BMW 325i Coolant Level Sensor

The BMW 325i Coolant Level Sensor keeps a close eye on the coolant volume, allowing the dashboard light to alert the driver before the engine suffers from catastrophic overheating damage. This electronic Coolant Level Sensor is positioned in the cooling system to detect whether there is sufficient coolant in the system and alerts the driver immediately if it is too low. The core design across generations of BMW 325i models is consistent. They rely on the same electronic monitoring principle rather than several styles or variants. That simple principle already offers reliable real-time feedback. This Coolant Level Sensor is therefore common across all the trims, making it easy for any owner to maintain. When fully functional, the Coolant Level Sensor alerts the driver of the 325i to add further fluid before damage occurs to the pistons, gaskets, and other heat-sensitive components. The engine could suffer serious damage if this part fails, as the coolant warning light will stay off even when the reservoir is dry. As a result, all BMW 325i owners have a Coolant Level Sensor to keep the motoring experience safe, secure, and stress-free.

If you are looking for OEM BMW 325i Coolant Level Sensor, we highly recommend to shop with us. Not only do we offer budget friendly prices, but we also provide fast delivery. In addition, we have a hassle-free return policy on all genuine BMW 325i Coolant Level Sensor that come backed by the manufacturer's warranty.

BMW 325i Coolant Level Sensor Parts Questions & Experts Answers

Fluid Level Sensor
17137553919
Q:
How to test,remove and install Coolant Level Sensor and Coolant Temperature Sensor in cooling system on BMW 325i?
Posted by Jurie D.
A:
A BMW dealer or specialist should test the radiator outlet thermostatic switch, located in the radiator lower hose. It should only be removed when the engine and radiator are cold. Disconnect the battery cable before removing the switch and use a plug to prevent foreign matter from entering the radiator. The coolant temperature sensor is on the cylinder head's front side. Remove the air intake duct and disconnect the wiring before unscrewing the sensor. Apply sealant to the threads before reinstallation. The coolant level sensor is in the coolant expansion tank base. Disconnect the electrical connector and remove the bolts to access the sensor. Rotate it counterclockwise for removal. Installation is the reverse of removal.
Answered by BMW Parts Specialist Chaz / Mar 19, 2023