TomT wrote:Here is what the service manual says about pressures:
DTC Display Item Malfunction detected condition. Possible causes:
C1704 LOW PRESSURE FL Front LH tire pressure drops to * kPa (* kg/cm2, * psi) or less.
C1705 LOW PRESSURE FR Front RH tire pressure drops to * kPa (* kg/cm2, * psi) or less.
C1706 LOW PRESSURE RR Rear RH tire pressure drops to * kPa (* kg/cm2, * psi) or less.
C1707 LOW PRESSURE RL Rear LH tire pressure drops to * kPa (* kg/cm2, * psi) or less.
*:196.5 kPa (2.0 kg/cm2, 28 psi) [Standard air pressure is for 250 kPa (2.5 kg/cm2,36 psi) vehicles.]
I'm pretty sure none of my tires dropped to 28 psi when my warning light came on. The lowest one was 33 psi.
I use one of those round analog tire pressure gauge that's supposed to be pretty accurate. I must admit that I measured and refilled them right after a trip and didn't give them a chance to cool down first. But even after they cooled down, I remeasured the pressure and they were still at the recommended pressure of 36 psi.
I would like to hear from others who've had their warning light come on to see what low pressure level their tires reached.