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Q: 4wd not working, just making a clicking nose

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4wd is not working, just making a click nose

My car has 240002 miles.
My car has an automatic transmission.

A: Hi, thanks for writing in. It sounds like y...

Hi, thanks for writing in. It sounds like you have the NV233 transfercase. The transfercase control module receives input from various sensors and switches, including the tranfercase range switch. It then uses this information to engage the transfercase actuator/encoder motor to engage the four-wheel drive. My guess is that the clicking you hear is the actuator trying to engage the transfercase unsuccessfully. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this issue for you, and make or suggest any repairs as needed.

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