How to Tell If the 4WD Is Working in an Acura MDX

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The Acura MDX is a midsized sport utility vehicle that comes standard with a super handling-all wheel drive (SH-AWD) feature. The SH-AWD is a constant four wheel drive system that adjusts wheel torque values independently based on driving conditions. The SH-AWD system is active during all normal driving conditions, however may become inactive due to problems in the system. You can verify that the AWD is working on your Acura MDX by making sure that none of the malfunction messages appear on the instrument cluster.

  • Start the engine on the Acura MDX. Watch the instrument panel while the engine starts, ensuring that the "SH-AWD" light appears briefly on the tachometer gauge on the left side of the instrument panel. The light will flash and then disappear. As long as the light stays off, there is not a problem with the SH-AWD system.

  • Ensure that "SH-AWD Diff Temp. High" does not appear on the multi-information display at the top of the instrument cluster. If this message appears pull over and stop. Put the vehicle in "Park" and allow the differential temperature to cool and the message to disappear before driving again.

  • Ensure that "Check SH-AWD System" does not appear on the multi-information display at the top of the instrument cluster. This message indicates that there is a problem with the system. If this message appears, the 4WD is currently not working; only front wheel drive works. Take the vehicle to a dealer or mechanic to have the problem diagnosed.

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