TSW15D MAHLE Temperature Switch, radiator fan

MAHLE TSW15D Switch Sensor

Description

The Switch/Sensor is a temperature sensor used in engine electronics, specifically in the category of Engine Parts > Engine Electronics > Temperature Sensor. It provides accurate temperature readings to ensure optimal engine performance and prevent overheating. The MAHLE TSW15D Switch/Sensor offers improved reliability and durability with its compact design (72.0 x 35.0 x 37.0 mm) and robust construction.

Key Features & Benefits

This little guy basically monitors the temperature of something – usually coolant, but sometimes oil or even intake air. It’s a simple on/off switch. When the temperature hits a certain point, it completes an electrical circuit. It doesn’t tell the computer exactly what the temperature is, just that it’s reached a threshold. Think of it like a simple alarm – it either triggers, or it doesn’t. Its job is to signal the computer to take action. For example, a coolant temperature switch will tell the computer when the engine is warm enough to turn on the cooling fan, or when it's cold enough to adjust the fuel mixture for better starting. Sometimes it'll activate a warning light on your dashboard if something is overheating. They're often used for things like air conditioning too – making sure the compressor doesn’t kick on when it’s really cold outside.

Symptoms, Risks & Replacements

If this sensor fails, the computer isn't getting the correct information. This can lead to a lot of problems. You might have your engine running too rich or too lean, causing poor fuel economy and potentially damaging the catalytic converter. Or, like I said, the fan might not come on, leading to overheating, which is a serious issue. You’ll notice if the fan isn't working when it should be, or if the temperature gauge is acting strangely. Sometimes, the check engine light will come on. You can find a replacement for most vehicles on a site like Fixparts Online, they carry a pretty wide selection. It’s a relatively inexpensive part, and replacing a bad one can save you a lot of headaches down the road. Product information is provided for reference only. The part number and compatibility with your equipment are decisive when selecting the correct item.