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A220 uses the ABS sensors to determine changes in rotation speed and thus, indirectly, one low pressure tire. There are no TPMS sensors in the valve stems. Consequently, actual pressure is not available.
The advantage of this system is that it does not depend on TPMS sensors in the valve stem. This means you can buy winter tires/rims without the additional expense of buying sensors.
However, you should, when changing tires, go into the settings menu and tell Mercedes to calibrate the tire pressure warning.
You can also always do it the old fashioned way by buying an inexpensive tire pressure gauge and checking each tire yourself before you drive the car so that you get the most accurate tire pressure.
Interesting I wonder if this is the difference, mine is a 2019 A250 from Canada and it doesn't have the individual tire pressure display. It also doesn't have the lane keep assistant feature as part of my driver's assistant package.
PFL205.064 with M276.823 (Oil pump solenoid defeated)
Originally Posted by Gloonyx
Has anyone retrofitted OEM TPMS sensors for their A-class equipped with ABS-based sensor?
You also need the control unit, here is idea of how it was done on an old vehicle (just as an idea, after all the W177 A-Class is a way newer vehicle and everything is placed differently with way more electronics): https://mbworld.org/forums/c-class-w...ispreloading=1
Personally, I don't think it is worth the hassle, because you need to buy a set of TPMS sensors, they aren't expensive but you need a set for both pairs of wheels if you need to swap summer and winter plus they aren't always accurate, it is a good reference but the good ol' manual checking is always the way to go to ensure proper inflation and to ensure safety.
08-14-2020, 12:40 AM
