Where is the outdoor temperature sensor located on the Focus?
3 Answers
The outdoor temperature sensor on the Focus is located on the inner side of the front bumper, mounted on the anti-collision beam. Its functions: 1. Detects the external ambient temperature, and the control system determines the control method based on the difference between the external and internal temperatures; 2. Provides the ECU with the external temperature signal, and the ECU compares this signal with the internal temperature signal to determine the cabin temperature to meet the needs of the occupants. The Focus is a compact car under the Ford brand, powered by two engines: the 1.5L EcoBoost and the 1.5L TiVCT, with all models meeting the China VI emission standards. In terms of body dimensions, the car measures 4647mm in length, 1810mm in width, and 1468mm in height, with a wheelbase of 2705mm.
I remember when I studied the Ford Focus before, its outside temperature sensor was mainly hidden behind the front bumper grille, near the license plate area. This location has good ventilation and isn't affected by engine heat, so the temperature readings are accurate. But honestly, the low position makes it prone to issues. Once during winter, slush covered the sensor, causing the dashboard temperature display to jump erratically, making the automatic AC blast cold air uncontrollably. A friend also damaged theirs with a high-pressure car wash spray - replacing it with an OEM part cost just a few hundred bucks. Reminder to everyone: check if the sensor is blocked by leaves or bugs before driving, especially before long trips, as false temperature readings can affect fuel efficiency and AC performance.
Once my car display showed 27°C, but I was shivering as soon as I stepped out. After checking, it turned out to be a faulty temperature sensor. In the Focus model, the sensor is usually installed on the inner side of the front grille, right below the logo. I guess the manufacturer designed it this way to minimize engine heat interference, but it’s actually quite problematic—it easily gets covered in dirty water splashed up when driving through puddles, causing erratic readings on rainy days. Now I’ve developed a habit of using a soft brush to clean that area every time I wash my car myself. If the dashboard temperature shows a dash or jumps around, don’t rush to the repair shop—first try wiping the sensor probe with a wet wipe, and chances are it’ll return to normal.
