Delray
Well-known member
Had a minor issue with tire pressure readings.
Posting this in case someone has a similar issue and is searching for info ....
Two days ago, my dashboard tire pressure readings disappeared (well-kept 2013 BMW C650 GT with 18,800 miles).
I knew it wasn't simultaneous failure because I replaced the rear sensor four months ago and the front sensor is OEM (8 years old).
For two days, nothing. All I saw was two dashes for each tire ... "- - " and "- -".
I figured the problem must be electrical or computer-related. I began my journey into the BMW Matrix by checking the fuse. My 2015 Owner's Manual shows a 4 amp fuse for the tire pressure circuit, although my 2013 has a 7.5 amp fuse in that socket. The fuse was fine. Just to try SOMETHING different, I switched the tire pressure fuse with an adjacent 7.5 amp fuse and made sure it was sitting tightly when I replaced it.
Voila. Problem solved. It's been fine for the last two days. Loose fuse? Inexplicable glitch or coincidence? Don't know. My next move would have been to plug my OBDLink into the bike and use Hex Code diagnostics. Glad I didn't need it.
Only conclusion I can draw: if your tire pressure readings vaporize, first, make sure your fuse is good and sitting tightly. It's shown in the owner's manual, #3, third from the right on the top row; fuses are behind the upper right fairing.
Also worth noting: My tire pressure readings have been reliably 3 lbs. lower-than-actual. When I see the readings, I automatically add 3 lbs. per tire in my head to get an accurate number. Not a perfect system, but I love the feature. I use it every time I start riding to make sure there's proper air in the tires.
Posting this in case someone has a similar issue and is searching for info ....
Two days ago, my dashboard tire pressure readings disappeared (well-kept 2013 BMW C650 GT with 18,800 miles).
I knew it wasn't simultaneous failure because I replaced the rear sensor four months ago and the front sensor is OEM (8 years old).
For two days, nothing. All I saw was two dashes for each tire ... "- - " and "- -".
I figured the problem must be electrical or computer-related. I began my journey into the BMW Matrix by checking the fuse. My 2015 Owner's Manual shows a 4 amp fuse for the tire pressure circuit, although my 2013 has a 7.5 amp fuse in that socket. The fuse was fine. Just to try SOMETHING different, I switched the tire pressure fuse with an adjacent 7.5 amp fuse and made sure it was sitting tightly when I replaced it.
Voila. Problem solved. It's been fine for the last two days. Loose fuse? Inexplicable glitch or coincidence? Don't know. My next move would have been to plug my OBDLink into the bike and use Hex Code diagnostics. Glad I didn't need it.
Only conclusion I can draw: if your tire pressure readings vaporize, first, make sure your fuse is good and sitting tightly. It's shown in the owner's manual, #3, third from the right on the top row; fuses are behind the upper right fairing.
Also worth noting: My tire pressure readings have been reliably 3 lbs. lower-than-actual. When I see the readings, I automatically add 3 lbs. per tire in my head to get an accurate number. Not a perfect system, but I love the feature. I use it every time I start riding to make sure there's proper air in the tires.
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