SL55/63/65/R230 AMG: Tire Pressure Monitoring End of Life
Thread Starter
MBWorld Fanatic!
Joined: Jul 2002
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From: UK
SL55 AMG
Tire Pressure Monitoring End of Life
I guess I have one of the oldest SL55's around, 7 years old in September.
Been getting a warning message about the tire pressure monitoring even though the pressures displayed are correct.
The dealer says the batteries in the sensors in the wheels are failing and I need new sensors, $800 for a set fitted.
I'm wondering if anyone else here is seeing the same problem?
Been getting a warning message about the tire pressure monitoring even though the pressures displayed are correct.
The dealer says the batteries in the sensors in the wheels are failing and I need new sensors, $800 for a set fitted.
I'm wondering if anyone else here is seeing the same problem?
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From: NoVa
2004 S55 (SOLD, miss it every day), 2009 GL550
my '04 S55 just got its TPMS processor replaced (CPO). I can't recall the exact name of the part replaced, but it was the "brain" not the censors in the tires. It was constantly complaining about tire pressures but they were all reading fine in the dash. I did a reset (R button) as one would do after adding air and that really pissed it off. The unit failed outright soon after that, and I started getting "drive to shop" errors soon after. Dealer replaced the unit without asking any questions.
Apart from the "drive to shop" failure, this sounds exactly like the symptoms you are having. Now, this doesn't mean your censor batteries are dead, only that it could be something else.
Apart from the "drive to shop" failure, this sounds exactly like the symptoms you are having. Now, this doesn't mean your censor batteries are dead, only that it could be something else.
Thread Starter
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From: UK
SL55 AMG
Thanks for that, I'm getting the "Visit Workshop" message too; it may be it is the control unit which has failed. Did they replace under warranty and if not, what was the cost? The crazy thing is that the repair cost is nearly double the original cost of the option.
The diagnostics for this thing seem quite poor and it would not be good to get the sensors replaced outside the dealership if the problem then turned out to be the control unit.
The diagnostics for this thing seem quite poor and it would not be good to get the sensors replaced outside the dealership if the problem then turned out to be the control unit.
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Joined: May 2009
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From: NoVa
2004 S55 (SOLD, miss it every day), 2009 GL550
Thanks for that, I'm getting the "Visit Workshop" message too; it may be it is the control unit which has failed. Did they replace under warranty and if not, what was the cost? The crazy thing is that the repair cost is nearly double the original cost of the option.
The diagnostics for this thing seem quite poor and it would not be good to get the sensors replaced outside the dealership if the problem then turned out to be the control unit.
The diagnostics for this thing seem quite poor and it would not be good to get the sensors replaced outside the dealership if the problem then turned out to be the control unit.
it was replaced under CPO. Here's the line item from the invoice:
Performed SDS Test, found fault code B1349-001 (Check all wheel sensors). Checked battery life on all TPM sensors, all have more than 6 months battery life. Replaced TPM control module, performed programming, & cleared codes.
part number appears to be 002-540-75-45, description is "switch", and cost shown is 0.00
Thread Starter
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From: UK
SL55 AMG
Thanks for the extra information.
I understand the control unit predicts the remaining battery life and the recommendation is to replace the sensors if the remaining battery life is 6 months or less. Mine are all showing less than that. There's evidently a number of different error codes and, like you, I'm getting the "Check all wheel sensors" code in addition to specific failure codes.
I'm convinced this car is going to be a nightmare as the electronics age and we (collectively) get more gremlins. I'm sure most R230s will go to the scrap yard long before they are mechanically worn out.
I've decided to have the work done and just hope the control unit is not shot as well.
I understand the control unit predicts the remaining battery life and the recommendation is to replace the sensors if the remaining battery life is 6 months or less. Mine are all showing less than that. There's evidently a number of different error codes and, like you, I'm getting the "Check all wheel sensors" code in addition to specific failure codes.
I'm convinced this car is going to be a nightmare as the electronics age and we (collectively) get more gremlins. I'm sure most R230s will go to the scrap yard long before they are mechanically worn out.
I've decided to have the work done and just hope the control unit is not shot as well.
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Joined: Oct 2006
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From: Lynnwood in summer, Fountain Hills during the rainy season in Wa.
2008 Maserati QP EGT, 2005 SL55AMG , 2002 CLK55AMG 2002 C230K Coupe
You can get the sensors for under $500 at Tire rack then any tire shop can install them and you don't need the dealer or shop to get them on line.
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MBWorld Fanatic!
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From: NoVa
2004 S55 (SOLD, miss it every day), 2009 GL550
edit:
found the post here
I have no idea if it works, but if it does it's a HUGE savings
Last edited by i_am_amused; Jul 20, 2009 at 01:48 PM.
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Senior Member
Joined: Oct 2006
Posts: 375
Likes: 1
From: Lynnwood in summer, Fountain Hills during the rainy season in Wa.
2008 Maserati QP EGT, 2005 SL55AMG , 2002 CLK55AMG 2002 C230K Coupe
Yes, but our sensors 03-06 are 315mhz.
I believe the tire rack price was $97 ea and the valve stem kit was about $12ea. If you don't need stems the saves a few bucks.
I believe the tire rack price was $97 ea and the valve stem kit was about $12ea. If you don't need stems the saves a few bucks.
i read somewhere that the sensors for one of the Ford models (pickup?) are the same as for some MBs, and at a substantially lower cost. Might want to search on that as well
edit:
found the post here
I have no idea if it works, but if it does it's a HUGE savings
edit:
found the post here
I have no idea if it works, but if it does it's a HUGE savings
MBWorld Fanatic!
Joined: May 2009
Posts: 1,071
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From: NoVa
2004 S55 (SOLD, miss it every day), 2009 GL550
Still, $500 plus tire shop install fee is much less than $800 at the dealer. You should have enough left to buy some AMG valve stem caps
Senior Member
Joined: Oct 2006
Posts: 375
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From: Lynnwood in summer, Fountain Hills during the rainy season in Wa.
2008 Maserati QP EGT, 2005 SL55AMG , 2002 CLK55AMG 2002 C230K Coupe
Because I just installed a set and I'm buying another set for my other wheels. I did my research with the OEM sensors.
MBWorld Fanatic!
Joined: May 2009
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From: NoVa
2004 S55 (SOLD, miss it every day), 2009 GL550
Senior Member
Joined: Oct 2006
Posts: 375
Likes: 1
From: Lynnwood in summer, Fountain Hills during the rainy season in Wa.
2008 Maserati QP EGT, 2005 SL55AMG , 2002 CLK55AMG 2002 C230K Coupe
I just ordered another set for $384.06 (sensors and stems) shipped. They will ship to the UK. If you talk to Todd 574.287.2345 x673 he can fix you up.
Last edited by BeltFedBob; Jul 21, 2009 at 11:13 AM.
