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If the TPMS light illuminates in your 2018 Acura RDX, the initial step is to examine and inflate each tire. Check for any screws, nails, or holes in the tires that could cause air loss. Then, adjust the tire pressures to match the recommendations indicated on the decal located in the driver's door jamb. Once this is completed, you must reset the light by pressing and holding the TPMS button on the dashboard until it blinks three times. Subsequently, you should drive for about ten minutes to allow the sensors to memorize the new tire pressures and save them in the system's memory.
To recalibrate the tire pressure sensor on a 2018 Acura RDX, press and hold the reset button until the TPMS light on the dashboard blinks steadily three times.