"Tire Pressure Monitor Inoperative"
04-26-2013, 09:51 PM
#1
Member
Thread Starter
"Tire Pressure Monitor Inoperative"
so i had this message come up tonight on the dash. with it is the yellow tire symbol illuminated on the right side. it blinks, sometimes it doesn't, but it's now always lit in some way.
all tire pressures are a-ok. car is an '09 C 63 with 2700 miles.
so, i can't reset it. it doesn't allow me to do it from the dash because it says it's inoperative. which leads me to believe it's not a sensor, but it's the receiver in the car. i'd like to hard reset it by pulling the fuse (actually i'd like to check the fuse first) but I HAVE NO IDEA HOW TO FIND OUT WHAT FUSE IS FOR THE TPMS SYSTEM!
where the heck are the fuse diagrams for all the fuse blocks??? i looked in all the books, i looked in the spare tire equipment...nothing.
all tire pressures are a-ok. car is an '09 C 63 with 2700 miles.
so, i can't reset it. it doesn't allow me to do it from the dash because it says it's inoperative. which leads me to believe it's not a sensor, but it's the receiver in the car. i'd like to hard reset it by pulling the fuse (actually i'd like to check the fuse first) but I HAVE NO IDEA HOW TO FIND OUT WHAT FUSE IS FOR THE TPMS SYSTEM!
where the heck are the fuse diagrams for all the fuse blocks??? i looked in all the books, i looked in the spare tire equipment...nothing.
Last edited by builthatch; 04-26-2013 at 09:57 PM.
04-26-2013, 10:08 PM
#2
Member
Thread Starter
so i had this message come up tonight on the dash. with it is the yellow tire symbol illuminated on the right side. it blinks, sometimes it doesn't, but it's now always lit in some way.
all tire pressures are a-ok. car is an '09 C 63 with 2700 miles.
so, i can't reset it. it doesn't allow me to do it from the dash because it says it's inoperative. which leads me to believe it's not a sensor, but it's the receiver in the car. i'd like to hard reset it by pulling the fuse (actually i'd like to check the fuse first) but I HAVE NO IDEA HOW TO FIND OUT WHAT FUSE IS FOR THE TPMS SYSTEM!
where the heck are the fuse diagrams for all the fuse blocks??? i looked in all the books, i looked in the spare tire equipment...nothing.
all tire pressures are a-ok. car is an '09 C 63 with 2700 miles.
so, i can't reset it. it doesn't allow me to do it from the dash because it says it's inoperative. which leads me to believe it's not a sensor, but it's the receiver in the car. i'd like to hard reset it by pulling the fuse (actually i'd like to check the fuse first) but I HAVE NO IDEA HOW TO FIND OUT WHAT FUSE IS FOR THE TPMS SYSTEM!
where the heck are the fuse diagrams for all the fuse blocks??? i looked in all the books, i looked in the spare tire equipment...nothing.
so anyway it looks like it's position 70 in the rear (trunk) block.
Last edited by builthatch; 04-26-2013 at 11:22 PM.
05-01-2013, 11:55 PM
#3
Member
Thread Starter
dang i didn't know there was a time limit on edits.
here is an update: https://mbworld.org/forums/5632497-post7.html
here is an update: https://mbworld.org/forums/5632497-post7.html
08-06-2015, 02:44 PM
#5
Member
Thread Starter
here you go. the thread from elsewhere is in the second post. edit time limit expired so i couldn't edit the first post of this thread with the resolution.
Originally Posted by builthatch
I'm here and they've checked it all out. Apparently all the components are responding to tests just fine so they are applying a TSB that involves something with the ground for the TPMS control module. I asked for a copy but they said they can't provide it. Anyone know how I can check that out? I'll be here for about two hours for the repair. Fingers crossed.
Update: the fix worked. Apparently there is a ground issue where it invites interference which makes the control module freak out. They moved the ground, as well as shortened it.
Update: the fix worked. Apparently there is a ground issue where it invites interference which makes the control module freak out. They moved the ground, as well as shortened it.
