What is the role of the Coolant Temperature Sensor in relation to the ECM and coolant temperature on BMW X5?

The ECT sensor is a two-pin temperature sensor that supplies the coolant temperature to the ECM and the instrument cluster. It works in a similar way to an NTC (negative temperature coefficient) sensor; its resistance drops as the temperature of the coolant increases. The ECM changes ignition timing and air/fuel mixture with regard to the water temp; the sensor receives a 5-volt reference voltage, the voltage drop across the sensor varying with water temperature. If ECT sensor input is out of range, or unrealistic expected by the ECM, the MIL comes on whenever the OBD II fault criteria is met, and to ensure the engine runs, the ECM sets an assumed ECT value at 80 degree Celsius plus its offset 176 degrees f, while setting ignition timing to a conservative basic setting. It is mounted at the rear of the engine, to the left of cylinder 6, beneath the intake port and above the intake manifold. It is located under the intake manifold and thus to get to it, the manifold must be taken off after the engine has cooled. The ECT sensor connector has to be removed to eliminate the connection, and the sensor should then be unscrewed from the cylinder head, be careful as there will be some lose coolant. For reinstallation a new copper sealing washer has to be used, lost coolant has to be replenished and the DTC had to be checked and then cleared of its memory by resetting the ECM.

Genuine BMW X5 Coolant Temperature Sensor

Coolant Water Temperature Sensor

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10 Coolant Temperature Sensors found

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BMW X5 Coolant Temperature Sensor
Part Number: 13621433077
$46.66 MSRP: $66.05
You Save: $19.39 (30%)
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Product Specifications
- Other Name: Temperature Sensor, Coolant; Temperature Sending Unit, Temperature Sensor
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2000-2018 BMW X5 | 3.0i(E53), 4.4i(E53), 4.6is(E53), 4.8i(E70), 4.8is(E53), xDrive48i(E70), xDrive50i(E70), xDrive50i(F15)
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BMW X5 Temperature Sensor Water/Oil
Part Number: 13621433076
$46.66 MSRP: $66.05
You Save: $19.39 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Replaces: 23-01-7-838-935
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2018 BMW X5 | 3.0i(E53), 3.0si(E70), 4.8i(E70), sDrive35i(F15), xDrive30i(E70), xDrive35d(E70), xDrive35i(E70), xDrive35i(F15), xDrive40e(F15), xDrive48i(E70), xDrive50i(E70), xDrive50i(F15)
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BMW X5 Temperature Sensor Water/Oil
Part Number: 13627580635
$46.66 MSRP: $66.05
You Save: $19.39 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2011-2024 BMW X5 | 6 Cyl 3.0 L GAS, 6 Cyl 3.0 L MILD HYBRID EV-GAS (MHEV), 6 Cyl 3.0 L PLUG-IN HYBRID EV-GAS (PHEV), 8 Cyl 4.4 L GAS, 8 Cyl 4.4 L MILD HYBRID EV-GAS (MHEV), M50i(G05), sDrive35i(F15), xDrive35i(E70), xDrive35i(F15), xDrive40e(F15), xDrive40i(G05), xDrive50i(E70), xDrive50i(F15), xDrive50i(G05)
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BMW X5 Coolant Temperature Sensor
Part Number: 13627797957
$46.66 MSRP: $66.05
You Save: $19.39 (30%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Temperature Sensor, Coolant
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2014-2018 BMW X5 | xDrive35d(F15)
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BMW X5 Double Temperature Switch
Part Number: 13621703993
$32.57 MSRP: $41.78
You Save: $9.21 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2000-2006 BMW X5 | 3.0i(E53), 4.4i(E53), 4.6is(E53), 4.8is(E53)
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BMW X5 Temperature Sensor
Part Number: 61277639893
$50.97 MSRP: $67.50
You Save: $16.53 (25%)
Ships in 1-3 Business Days
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Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2016-2018 BMW X5 | xDrive40e(F15)
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BMW X5 Coolant Temperature Sensor
Part Number: 13628650714
$46.66 MSRP: $66.05
You Save: $19.39 (30%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Temperature Sensor, Coolant; AC Temperature Sensor, Temperature Sensor
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2019-2025 BMW X5 | 6 Cyl 3.0 L GAS, 6 Cyl 3.0 L MILD HYBRID EV-GAS (MHEV), 6 Cyl 3.0 L PLUG-IN HYBRID EV-GAS (PHEV), 8 Cyl 4.4 L GAS, M50i(G05), xDrive40i(G05), xDrive50i(G05)
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BMW X5 Coolant Temperature Sensor
Part Number: 13627823993
$46.66 MSRP: $66.05
You Save: $19.39 (30%)
Ships in 1-2 Business Days
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Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2014-2018 BMW X5 | xDrive35d(F15)
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BMW X5 TEMPERATURE SENSOR, COOLANT
Part Number: 13625A115F5
$46.66 MSRP: $66.05
You Save: $19.39 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2024 BMW X5 | 6 Cyl 3.0 L MILD HYBRID EV-GAS (MHEV), 6 Cyl 3.0 L PLUG-IN HYBRID EV-GAS (PHEV), 8 Cyl 4.4 L MILD HYBRID EV-GAS (MHEV)
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BMW X5 Temperature Sensor
Part Number: 61278741778
$53.52 MSRP: $70.87
You Save: $17.35 (25%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Battery Temperature Sensor
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2021-2024 BMW X5 | 6 Cyl 3.0 L PLUG-IN HYBRID EV-GAS (PHEV)

BMW X5 Coolant Temperature Sensor

BMW X5 Coolant Temperature Sensor keeps the SUV running smoothly by sending real-time coolant heat sensor readings to the engine control module. This allows electronic systems to select the correct fuel mixture, spark timing, idle speed, and the fan. Threaded directly into a coolant passage, the second BMW X5 Coolant Temperature Sensor style embraces an NTC thermistor whose resistance declines as the temperature increases. The management unit sends a five-volt reference and deciphers the returning signal to decide whether to make the fan switch on or to provide enriched fueling in the event of cold starts. Earlier versions were based on a simpler BMW X5 Coolant Temperature Sensor switch that only enabled or disabled an electrical path, like it was a binary trigger for other devices, such as fuel pre-heaters. However, modern thermistor versions offer a full range of temperature readings so that more functions, such as EGR actuation and torque converter lockup, only occur at safe temperatures. A fourth BMW X5 Coolant Temperature Sensor looks the same on the outside but is paired with an updated set of software strategies, so swapping generations without verifying the specifications can lead to erratic readings. The standalone Coolant Temperature Sensor is vital to prevent overheating or stalling while saving fuel.

If you are looking for OEM BMW X5 Coolant Temperature 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 X5 Coolant Temperature Sensor that come backed by the manufacturer's warranty.

BMW X5 Coolant Temperature Sensor Parts Questions & Experts Answers

Coolant Temperature Sensor
13621433077
Q:
What is the role of the Coolant Temperature Sensor in relation to the ECM and coolant temperature on BMW X5?
Posted by Judith R.
A:
The ECT sensor is a two-pin temperature sensor that supplies the coolant temperature to the ECM and the instrument cluster. It works in a similar way to an NTC (negative temperature coefficient) sensor; its resistance drops as the temperature of the coolant increases. The ECM changes ignition timing and air/fuel mixture with regard to the water temp; the sensor receives a 5-volt reference voltage, the voltage drop across the sensor varying with water temperature. If ECT sensor input is out of range, or unrealistic expected by the ECM, the MIL comes on whenever the OBD II fault criteria is met, and to ensure the engine runs, the ECM sets an assumed ECT value at 80 degree Celsius plus its offset 176 degrees f, while setting ignition timing to a conservative basic setting. It is mounted at the rear of the engine, to the left of cylinder 6, beneath the intake port and above the Intake Manifold. It is located under the intake manifold and thus to get to it, the manifold must be taken off after the engine has cooled. The ECT sensor connector has to be removed to eliminate the connection, and the sensor should then be unscrewed from the cylinder head, be careful as there will be some lose coolant. For reinstallation a new copper sealing washer has to be used, lost coolant has to be replenished and the DTC had to be checked and then cleared of its memory by resetting the ECM.
Answered by BMW Parts Specialist Brandon / Oct 03, 2023

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