shaners Posted December 1, 2012 Report Share Posted December 1, 2012 I just mounted my 16" winter tires and wheels on the C-max. I didn't want to spend the extra money for the TPMS sensors and figured that we would deal with the warning light staying on for a few months. Oddly enough, the light is not on! I am not complaining! When you start the car it does a system check and the light goes out just like it always did... Quote Link to comment Share on other sites More sharing options...
RaPieR Posted December 2, 2012 Report Share Posted December 2, 2012 I just mounted my 16" winter tires and wheels on the C-max. I didn't want to spend the extra money for the TPMS sensors and figured that we would deal with the warning light staying on for a few months. Oddly enough, the light is not on! I am not complaining! When you start the car it does a system check and the light goes out just like it always did...It will come on. The light will stay off for probably 20 minutes or so driving. That's what would happen on my Speed3 when I would switch to my winter tires that had no TPMS sensors. On my C-Max when I switch between winter tires and stock tires that both have the TPMS sensors, the light will come on for a few minutes then will reset and turn off. I've switched the tires twice without having to buy one of those TPMS sensor reset gadgets. TJBrennan 1 Quote Link to comment Share on other sites More sharing options...
shaners Posted December 2, 2012 Author Report Share Posted December 2, 2012 We have probably put 50 miles on and still no light... I wonder if it picks up the sensors from the stock tires in the basement when the car is parked at home? TJBrennan 1 Quote Link to comment Share on other sites More sharing options...
rfruth Posted December 10, 2012 Report Share Posted December 10, 2012 Makes you wonder how useful the TPMS is ;) TJBrennan 1 Quote Link to comment Share on other sites More sharing options...
C-MaxJaxon Posted December 10, 2012 Report Share Posted December 10, 2012 My car was delivered to me with 34 psi in the tires. That was measured after driving it. I estimate they would have 32 psi cold. Ford recommends 38, so I don't know how low they have to be to turn on a dash warning. Quote Link to comment Share on other sites More sharing options...
zhackwyatt Posted December 10, 2012 Report Share Posted December 10, 2012 Maybe it knows the difference between a missing sensor and a low pressure reading? Just ignores the missing sensor? Quote Link to comment Share on other sites More sharing options...
shaners Posted December 10, 2012 Author Report Share Posted December 10, 2012 I took about a 90 mile trip Saturday and the light finally came on after about 45 miles. Quote Link to comment Share on other sites More sharing options...
lpr Posted October 11, 2013 Report Share Posted October 11, 2013 I'm debating if I should go with TPMS and the triggering tool with my winter tire on rims...In fact, i'm curious to know just how annoying is the warning on the C-Max, if you are running winter tires with no TPMS? Thanks. Quote Link to comment Share on other sites More sharing options...
mtb9153 Posted October 13, 2013 Report Share Posted October 13, 2013 Boy I do not envy those of you having to gear up for nasty winter weather. Can't imagine having to change tires for winter driving. But that's why I live in sunny California. Not trying to sound smug or like a smart arshe. We all decide where we want to live. But it would be nice to have a White Christmas, but I can go to Tahoe for that. Drive safely everyone this winter. Quote Link to comment Share on other sites More sharing options...
drdiesel1 Posted October 13, 2013 Report Share Posted October 13, 2013 (edited) The TPMS system detects tire pressures. It has a high and a low threshold. Without the sensor to senda signal to the module, it takes awhile to trigger the lamp. Edited October 13, 2013 by drdiesel1 Quote Link to comment Share on other sites More sharing options...
Phil1336 Posted October 13, 2013 Report Share Posted October 13, 2013 My car was delivered to me with 34 psi in the tires. That was measured after driving it. I estimate they would have 32 psi cold. Ford recommends 38, so I don't know how low they have to be to turn on a dash warning.Ditto here. My C-MAX was less then a month and a half old with just over 1000 miles driven and the Low Air Pressure Tire Sensor "Chime" and Dash Indicator went on. Thought I might have picked up a nail and had a slow leak in one of the tires. Went to a Hess Gas Station which still offers "free air" used my own Tire Pressure gauge and discovered that all 4 Tires were (very) low. Vehicle was shipped and delivered with pressure varying from 31 to 34 PSI in all 4 Tires. Topped them all off at 40 PSI and everything was resolved. Quote Link to comment Share on other sites More sharing options...
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