Introduction
This article provides information on troubleshooting issues with the Downhill Assist Control (DAC) system in a Toyota Prado 120 series. Specifically, it addresses the common problem of the DAC indicator light blinking continuously without the system activating when driving forward.
Problem
The DAC indicator light blinks continuously when attempting to engage the system for forward downhill driving. The DAC system may function correctly when reversing downhill.
Potential Causes
- Incorrect Gear Selection: DAC might only engage in specific gears.
- Low Range Not Engaged: The vehicle may need to be in low range for DAC to function.
- Override Conditions: Holding down the center differential lock button may interfere with the DAC system’s activation in some models.
Troubleshooting Steps
- Gear Selection: Ensure the vehicle is in the correct gear (typically L or 1st) when attempting to activate DAC.
- Low Range Engagement: Verify that the vehicle is in low range before engaging DAC.
- Button Override: Avoid holding the center differential lock button down while trying to engage DAC, as this may disable or override the traction control system and interfere with the DAC functionality.
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