Ambient Temperature Sensor (Outside Temperature)
The ambient temperature sensor measures outside air temperature.
What is Ambient Temperature Sensor (Outside Temperature)?
It is often behind the front grille. Climate control uses it. The display shows ice warnings. The displayed value may update slowly to filter out engine heat. A damaged sensor can also affect climate control and air conditioning compressor operation. It is cheap and usually easy to replace, but it sits in an exposed position where stone chips and corrosion can damage it. Wrong outside temperature can also affect automatic headlights and windscreen heating on some cars.
How it works
A thermistor changes resistance with temperature.
Why it matters for your car
Engine heat in traffic affects readings. Damage causes wrong displays.
Other terms
- ACEA Oil Specification
- Barn Find
- Belt Tensioner
- Brake Dust
- Cold Start
- Crankcase Ventilation (PCV)
- Cylinder Block (Engine Block)
- Electronic Brakeforce Distribution (EBD)
- Exhaust System
- Fuel Pressure Test
- Off-Peak Charging
- Oxygen Sensor (Lambda Sensor)
- Paint Correction (Machine Polishing)
- Radiator
- Refrigerant (A/C Gas)
- Scuttle Panel (Cowl)
- Side Airbag
- Upholstery Cleaning
- Vinyl Roof
- Weight Distribution