2013-2015 BMW 320i xDrive Ambient Air Temperature Sensor Replacement Guide
Is your BMW's temperature display wrong or is the AC acting up? Your ambient air temp sensor is the likely cause.
- A faulty sensor will cause an incorrect dashboard temperature reading and problems with the automatic A/C and heat.
- The sensor is located in a vulnerable spot on the driver's side front fender liner, making it prone to physical damage.
- Replacement is a very easy, DIY-friendly task that takes less than 30 minutes.
- A quality aftermarket brand like URO Parts is a reliable and cost-effective solution for this repair.
Is Your BMW 320i xDrive Showing the Wrong Temperature?
If the temperature on your dashboard is stuck on an odd number, like -40°F, or seems completely wrong for the weather, a bad ambient air temperature sensor is the most common reason. Because this sensor is located in the front bumper area, it's exposed to road debris, water, and curb impacts that can damage it or its wiring. A faulty sensor can also cause your automatic climate control to misbehave, like blowing warm air when you want AC, because it's receiving incorrect outside temperature data.
Choosing the Right Aftermarket Sensor
For a simple component like the ambient air temperature sensor, you don't need to pay the high price for a genuine BMW part. A quality aftermarket sensor provides the same function and reliability for a fraction of the cost.
- URO Parts: This is a well-known aftermarket brand that offers a direct-fit replacement for the original sensor. It's designed to be a simple plug-and-play installation without any need for modifications. For a non-critical part like this, URO Parts is a cost-effective and reliable choice.
- OEM (Original Equipment Manufacturer): The original BMW sensor works perfectly well, but costs significantly more. Some newer versions of the OEM sensor may even require a different electrical connector, adding a layer of complication to the repair. An aftermarket part with a direct-fit connector is often the easier choice for a DIY repair.
Known Issues & Recalls
There are no specific recalls or Technical Service Bulletins (TSBs) from BMW or the NHTSA for the ambient air temperature sensor on the 2013-2015 320i xDrive. The most common issue is physical damage to the sensor or its wiring due to its location on the driver's side front bumper area.
Cost of Replacing the Ambient Air Temperature Sensor
| Part Type | Price Range |
|---|---|
| New Aftermarket (URO Parts) | $19.87 |
| New OEM | $55 - $72 |
| Shop Labor | $50 - $100 |
DIY Installation Tips
Replacing this sensor is a simple DIY job that can be done in under 30 minutes. The sensor is located on the driver's side, clipped into the front fender liner or brake cooling duct. You can typically access it by turning the steering wheel all the way to the right and removing a few 8mm screws holding the fender liner. Unplug the old sensor, snap the new one in place, and reconnect the electrical plug. No special tools are required.
Frequently Asked Questions
Where is the ambient air temperature sensor located on my 2013-2015 320i xDrive?
It is located in the front bumper area on the driver's side (left side). It is usually clipped into the plastic fender liner or the brake air duct, making it somewhat exposed to the road.
Can I replace this sensor myself?
Yes, this is a very easy DIY repair. It involves removing a few screws to access the sensor, unplugging the old one, and plugging in the new one. The difficulty is very low and requires only basic hand tools.
Will a bad ambient temp sensor cause a Check Engine Light?
Yes, a failing sensor can trigger the Check Engine Light and store a fault code, most commonly P0073, in the car's computer.
What happens if I don't replace a bad sensor?
Your car will still be safe to drive, but the automatic climate control will not work correctly, which can be uncomfortable. In rainy or humid weather, this can also make it difficult to defog your windshield.
Technical Specifications
OEM Part Numbers: 65816905133 65816936953 65810141199
The ambient air temperature sensor is a thermistor with a 2-pin, plug-in style oval connector. Its electrical resistance changes based on the outside air temperature, sending a variable voltage signal to the vehicle's computer.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- BMW 320i xDrive: