TPMS situation
Thread Starter
MBWorld Fanatic!
Joined: Dec 2006
Posts: 4,949
Likes: 39
From: Clifton, NJ
96 and 08 911 turbos
TPMS situation
Anybody ever have this situation.
The IP readout shows about 30psi in the front and 33 psi in the rear. I will randomly get a "check tire pressure" or "RR (right rear) tire pressure" warning.
I've confirmed the pressure with a standard gauge and its just about correct.
Is this a control unit problem or a wheel sensor?
thanks.
The IP readout shows about 30psi in the front and 33 psi in the rear. I will randomly get a "check tire pressure" or "RR (right rear) tire pressure" warning.
I've confirmed the pressure with a standard gauge and its just about correct.
Is this a control unit problem or a wheel sensor?
thanks.
MBWorld Fanatic!
Joined: Dec 2004
Posts: 3,063
Likes: 26
From: Tampa, FL
2005 S500 4-Matic, 1978 450SL
First, suspect a sensor; battery may be going bad. If so, best to replace all sensors. Relatively inexpensive at the Tire Rack.
You could try the TPMS system reset procedure in your owner's manual (also at http://www.benzworld.org/forums/new-...lp-i-hope.html) as well as https://mbworld.org/forums/s-class-w220/227693-tire-pressure-sensor-compatibility.html and http://www.benzworld.org/forums/w220...4-315-mhz.html
You could try the TPMS system reset procedure in your owner's manual (also at http://www.benzworld.org/forums/new-...lp-i-hope.html) as well as https://mbworld.org/forums/s-class-w220/227693-tire-pressure-sensor-compatibility.html and http://www.benzworld.org/forums/w220...4-315-mhz.html
Thread Starter
MBWorld Fanatic!
Joined: Dec 2006
Posts: 4,949
Likes: 39
From: Clifton, NJ
96 and 08 911 turbos
Im still under the factory warranty, so Im going to stop by the dealer, but I wanted to get an idea if it would be a "drop it off, get breakfast, and you're done", or a get a loaner, and we'll call you tomorrow type of thing.
thanks for the info.
thanks for the info.
MBWorld Fanatic!
Joined: Jul 2006
Posts: 1,578
Likes: 7
04 S430 (sold),05 X5 4.4i, 02 325i, 87 560SL, 85 Alfa Romeo
Don't be shocked to find out they are not covered..And Don;t buy theirs. they are more than twice as much as the same thing from Tire Rack and Discount Tire.
Super Member
Joined: Nov 2005
Posts: 790
Likes: 17
From: West Palm Beach
2004 S500
My TPM's have recently started sending errant signals out "alert....tire failure", etc. For some reason this usually happens during or just after hard acceleration such as entering a freeway on ramp. I just reset the sensors and chek the tires. I generaly consistant with checking tire pressure weekly on our vehicles and (my Dad was in the tire biz for 55 years) have a compressor in the garage for that purpose.
i guess it's time to look into replacements....or can the batteries be updated?
i guess it's time to look into replacements....or can the batteries be updated?
MBWorld Fanatic!
Joined: Jul 2006
Posts: 1,578
Likes: 7
04 S430 (sold),05 X5 4.4i, 02 325i, 87 560SL, 85 Alfa Romeo
My TPM's have recently started sending errant signals out "alert....tire failure", etc. For some reason this usually happens during or just after hard acceleration such as entering a freeway on ramp. I just reset the sensors and chek the tires. I generaly consistant with checking tire pressure weekly on our vehicles and (my Dad was in the tire biz for 55 years) have a compressor in the garage for that purpose.
i guess it's time to look into replacements....or can the batteries be updated?
i guess it's time to look into replacements....or can the batteries be updated?
Actually you know what Sprink49? I have a few old one's I am going to take on apart today ans see if it can be done and what type of batteries they use. Wouldn't it be surprising to find out they can be resealed with any store bough sealant and the batteries can be purchased at Wal-Mart? We'll find out soon.. I'll keep you posted.
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MBWorld Fanatic!
Joined: Dec 2004
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From: Tampa, FL
2005 S500 4-Matic, 1978 450SL
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MBWorld Fanatic!
Joined: Jul 2006
Posts: 1,578
Likes: 7
04 S430 (sold),05 X5 4.4i, 02 325i, 87 560SL, 85 Alfa Romeo
Crap! I forgot I sold the wheels that had the old sensors mounted on them.. Hmmmm Well I guess I'll have to experiment some other way. Now I's curious..
