TPMS Question
Thread Starter
Member
Joined: Sep 2015
Posts: 242
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2009 CLK 350
TPMS Question
My 2009 CLK 350 had the TPMS warning come on red the other day. I checked the pressure and found the driver's rear 6 lbs. low, so I topped all of them up to 33psi and reset the system. This morning on the way to work the warning came on white, so I reset it and it came back on. I have not checked the tire pressures yet but I think I have a rear sensor failing. The back two are original I think, the fronts were changed last year when I got new front tires.
Anyways, does anyone know the mhz of the sensors I need, I've been looking on ebay and see 315 and 433mhz OEM ones?
Anyways, does anyone know the mhz of the sensors I need, I've been looking on ebay and see 315 and 433mhz OEM ones?
MBWorld Fanatic!
Joined: Dec 2010
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2008 CLK550 Cab
Don't know the answer to your question, but check your pressures again before buying new sensors. Of course you may have picked up a nail, but a very common issue is a bad seal on the TPMS stem that leaks. Cheap to replace. My '08 sensors are still all original.
Thread Starter
Member
Joined: Sep 2015
Posts: 242
Likes: 17
2009 CLK 350
Tire dropped 3lbs. overnight. Didn't see a puncture, so I'm gonna order a TPMS sensor and drop it off with car for a mechanic friend to swap the sensor and figure out where it's leaking from. For $20 it's worth it to swap it just for the new seal. BTW looks like 433mhz is the correct frequency.
