GL tire pressure monitor ?
Thread Starter
Junior Member
Joined: Sep 2006
Posts: 48
Likes: 0
From: California
07 GL450,
GL tire pressure monitor ?
Does the US model of the gl use sensors(active monitors) or does it just count pulses from the wheel speed sensors? I am thinking of changing wheels.
Newbie
Joined: Jan 2007
Posts: 3
Likes: 0
2006 S55 & 2007 GL450
DDS problems
I bought a set of winter wheels and tires for my GL from Tire Rack. Even bought 4 new Siemens 433Mhz pressure sensors/transmitters costing $140 each.
Last weekend I put on the snow tires and found the low tire pressure alarm activated. I checked the inflation pressure and reset the sensor. Unfortunately, the alarm continued to activate.
My dealer tells me that they have to reprogram the vehicles computer to recognize the new sensors at each wheel position. They want to charge me $120 to do this. Evidently, this is also required if you rotate the tires.
Can this possibly be true?!
Last weekend I put on the snow tires and found the low tire pressure alarm activated. I checked the inflation pressure and reset the sensor. Unfortunately, the alarm continued to activate.
My dealer tells me that they have to reprogram the vehicles computer to recognize the new sensors at each wheel position. They want to charge me $120 to do this. Evidently, this is also required if you rotate the tires.
Can this possibly be true?!
Newbie
Joined: Jan 2007
Posts: 3
Likes: 0
2006 S55 & 2007 GL450
Star Diagnostic System Reprogramming Required for Tire Rotation
An MB factory technician told me that the TPMS system needs to "relearn" the new sensor positions whenever you change wheels, even for a routine tire rotation. This process requires the use of the "Star Diagnostic" system, which only MB dealers have.
Needless to say, the owners manual doesn't include any information about this.
This is annoying.
Needless to say, the owners manual doesn't include any information about this.
This is annoying.
Super Member
Joined: Dec 2001
Posts: 672
Likes: 0
From: Northern California
MBs
The online manual for the GL has a section for tire pressure monitoring.
Two different systems are described. The low tire pressure warning system, based on ABS wheel speeds, is described starting on page 304.
The tire pressure monitor system using sensors at each wheel is described starting on page 306.
http://www4.mercedes-benz.com/e/cars...5_betrieb.html
Two different systems are described. The low tire pressure warning system, based on ABS wheel speeds, is described starting on page 304.
The tire pressure monitor system using sensors at each wheel is described starting on page 306.
http://www4.mercedes-benz.com/e/cars...5_betrieb.html
Thread Starter
Junior Member
Joined: Sep 2006
Posts: 48
Likes: 0
From: California
07 GL450,
so the 07 gl does have sensors at each wheel and does'nt just count pulses using the abs sensors BUT does not dislpay tire pressures or tell you which wheel is low and cannot handle the tires being rotated. Once again it seems that MBZ has over-engineered what should be a simple system. i find the comand system and the owners manual devoid of any real tech/service related info. I like the GL and the wife uses it as her daily driver and I use it for towing but we will see if this things stays around once the warranty nears the end. I like cars that I can work on myself and appreciate sound/quality engineering. I don't think you are going to see older high mileage examples of the current MB lineup like you saw with the older models.
Enough ranting for me I am going to go ride my motorcycle.
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Enough ranting for me I am going to go ride my motorcycle.
[/PHP]
Super Member
Joined: Dec 2001
Posts: 672
Likes: 0
From: Northern California
MBs
so the 07 gl does have sensors at each wheel and does'nt just count pulses using the abs sensors BUT does not dislpay tire pressures or tell you which wheel is low and cannot handle the tires being rotated. Once again it seems that MBZ has over-engineered what should be a simple system.
Only those GLs with option code 475 have the tire pressure monitoring system with transmitters at each wheel. This option is offered for EU295 for the GL450 and GL500 in Germany and I am not sure if it is offered in the USA.
Here is a great and simlpe overview of both systems on the info page from the supplier, Continental AG:
http://www.conti-online.com/generato...g_1103_en.html
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Super Member
Joined: Dec 2001
Posts: 672
Likes: 0
From: Northern California
MBs
https://www.startekinfo.com/StarTek/...stedDocId=8001
This info is also available online in case you dont wont to buy a DVD, at http://www.startekinfo.com
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Thread Starter
Junior Member
Joined: Sep 2006
Posts: 48
Likes: 0
From: California
07 GL450,
thanks for all the great input you offer to myself and others.
The maintenance and service DVD for the GL just came out. Check out the Introduction Manual on there. Also wiring diagrams, component locators etc etc etc.
https://www.startekinfo.com/StarTek/...stedDocId=8001
This info is also available online in case you dont wont to buy a DVD, at http://www.startekinfo.com
https://www.startekinfo.com/StarTek/...stedDocId=8001
This info is also available online in case you dont wont to buy a DVD, at http://www.startekinfo.com
Super Member
Joined: Jul 2005
Posts: 577
Likes: 0
From: South Florida
2007 S65, 2005 Nissan Armada
An MB factory technician told me that the TPMS system needs to "relearn" the new sensor positions whenever you change wheels, even for a routine tire rotation. This process requires the use of the "Star Diagnostic" system, which only MB dealers have.
Needless to say, the owners manual doesn't include any information about this.
This is annoying.
Needless to say, the owners manual doesn't include any information about this.
This is annoying.
Senior Member
Joined: Apr 2014
Posts: 332
Likes: 70
2007 GL450
An MB factory technician told me that the TPMS system needs to "relearn" the new sensor positions whenever you change wheels, even for a routine tire rotation. This process requires the use of the "Star Diagnostic" system, which only MB dealers have.
Needless to say, the owners manual doesn't include any information about this.
This is annoying.
Needless to say, the owners manual doesn't include any information about this.
This is annoying.
MBWorld Fanatic!
Joined: Jan 2010
Posts: 3,116
Likes: 782
NGL450 w/EORP, S550
It is done automatically within a 30 minute drive. System needs to sense four pressure signals within 30 minutes to either keep the warning light from coming in, or sense lack of one or more sensors within 30 minutes to turn the light on. It’s a pretty dumb system.
Senior Member
Joined: Apr 2014
Posts: 332
Likes: 70
2007 GL450
Thanks for the info. does it mean that no "programming" is needed after replacing the bad tpms sensors with new ones? thanks
MBWorld Fanatic!
Joined: Jan 2010
Posts: 3,116
Likes: 782
NGL450 w/EORP, S550
MBWorld Fanatic!
Joined: Jun 2010
Posts: 2,755
Likes: 628
From: Emmett, ID, USA
2007 GL450
FYI I think it is ten miles, not 30 minutes. When I was trying to isolate which of my four sensors was bad - I replaced with good wheels one at a time - I noticed the warning light coming on at the same distance, 10 miles, from my house each time.
MBWorld Fanatic!
Joined: Jun 2010
Posts: 2,755
Likes: 628
From: Emmett, ID, USA
2007 GL450
Senior Member
Joined: Apr 2014
Posts: 332
Likes: 70
2007 GL450
Discount tire has the 433MHz sensors for $61 each installed with 6 year warranty which can be very useful (on another car I've had three REDI sensors dead within warranty period and DT replaced those free of charge)
I'm surprised that the tpms sensors on my 2007 GL450 (116k miles) lasted so long, as of today the "tire pressure monitor inoperative" warning light went off (it has been on and off for a while).
I'm surprised that the tpms sensors on my 2007 GL450 (116k miles) lasted so long, as of today the "tire pressure monitor inoperative" warning light went off (it has been on and off for a while).
MBWorld Fanatic!
Joined: Jun 2010
Posts: 2,755
Likes: 628
From: Emmett, ID, USA
2007 GL450
Discount tire has the 433MHz sensors for $61 each installed with 6 year warranty which can be very useful (on another car I've had three REDI sensors dead within warranty period and DT replaced those free of charge)
I'm surprised that the tpms sensors on my 2007 GL450 (116k miles) lasted so long, as of today the "tire pressure monitor inoperative" warning light went off (it has been on and off for a while).
I'm surprised that the tpms sensors on my 2007 GL450 (116k miles) lasted so long, as of today the "tire pressure monitor inoperative" warning light went off (it has been on and off for a while).
With a bead breaker you could do the work yourself, but frankly it's a chore.
Senior Member
Joined: Apr 2014
Posts: 332
Likes: 70
2007 GL450
All my tires were purchased at Discount Tires, they get rotated and re balanced every (other) year.
And it's a good opportunity to check the brake pads thickness while the wheels are off.
It's good to see that Discount Tires are using Milwaukee Fuel M18 impact wrenches.
The shops are much cleaner and quieter without the air tools and air compressors.
And it's a good opportunity to check the brake pads thickness while the wheels are off.
It's good to see that Discount Tires are using Milwaukee Fuel M18 impact wrenches.
The shops are much cleaner and quieter without the air tools and air compressors.
MBWorld Fanatic!
Joined: Sep 2005
Posts: 6,189
Likes: 242
From: Albuquerque
'10 CL550, '12 GL550
Recommend Intellisens sensors. They have versions that do not require programming ... just press the R button. This might save you the extra $100 the wonderful tire guys would charge you to program.
Senior Member
Joined: Apr 2014
Posts: 332
Likes: 70
2007 GL450
Just replaced two tpms sensors, the other two are still working. its amazing that those original sensors lasted 17 years.
The original sensors are Siemens VDO Daimer Chrysler 433.92MHz sensors
Discount tires used the BHsens Intellisens UVS7050 73.913.750 315/433MHz sensors.
No programing was performed and the "tire pressure monitor inoperative" warning message is gone.
The original sensors are Siemens VDO Daimer Chrysler 433.92MHz sensors
Discount tires used the BHsens Intellisens UVS7050 73.913.750 315/433MHz sensors.
No programing was performed and the "tire pressure monitor inoperative" warning message is gone.
MBWorld Fanatic!
Joined: Jun 2010
Posts: 2,755
Likes: 628
From: Emmett, ID, USA
2007 GL450
The BH sensors are the only ones sold by Rock Auto. I had mixed results with some Chinesium sensors; one out of four failed intermittently for a couple of years and then finally quit for good.
