Go Back   MBWorld.org Forums > Mercedes-Benz Sedans > C-Class (W203)
Sign in using an external account
Register Forgot Password?

C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

Sponsored by : My Mercedes Parts
Click Here

Welcome to MBWorld.org!
Welcome to MBWorld,

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
 
LinkBack Thread Tools Search this Thread Rate Thread Display Modes
Old 12-20-2011, 08:03 PM   #1
MBWorld Fanatic!
 
Join Date: Jul 2008
Posts: 6,217
Drives: 2012 Civic Si Sedan
Tire pressure warning TEST

Has anyone that has tire pressure loss warner coded through STAR ever actually had a warning, aside from Drex? I know several members on here have this feature turned on but after a test tonight I'm not sold that it actually works at all.

My front tires were set at 35PSI at the start of the test, and I steadily decreased the PSI in the left front and went for short drives. At 25, no warning. At 20, no warning, at 15 still no warning. Finally I dropped it to 13PSI and limped the car along a little ways and still no warning, even though the left front tire had 22PSI less than the other front and 20PSI less than both rears. There would be no dash warning necessary at this point as the car felt horrible.

Everyone knows the system is very limited and no where close to the TPMS that uses sensors in each wheel, that is understood. However now I am of the mind that this feature is not just severely limited but altogether doesn't actually work.
To remove this ad, register today or login if you already are registered!


Last edited by LILBENZ230; 12-20-2011 at 08:06 PM.
LILBENZ230 is offline   Reply With Quote
Old 12-20-2011, 08:08 PM   #2
Super Moderator
 
amdeutsch's Avatar
 
Join Date: Sep 2002
Location: www.Traben-Trarbach.de
Posts: 14,865
Drives: MPG+ ROLFCOPTER
Are you sure it was coded properly?
I had it and I had the screen turn completely red one time when I changed the rear tires to match the circumference of the fronts.
This was on my E when I went from 265/35 to 275/35. The system detected the difference.
__________________
amdeutsch is offline   Reply With Quote
Old 12-20-2011, 08:14 PM   #3
MBWorld Fanatic!
 
Join Date: Jul 2008
Posts: 6,217
Drives: 2012 Civic Si Sedan
Trey did the coding following the PDF instructions everyone seemed to be using. Enabling it in the instrument cluster then activating it through the chassis>ESP>tire pressure loss warner screen. I know Drex said it worked once for him, too, though Phil said it didn't work for him. I just went ahead and tested it out because I didn't see anyone else doing that. It looks like a 22PSI difference in one tire would be more than enough to trigger it.
LILBENZ230 is offline   Reply With Quote
Old 12-20-2011, 08:44 PM   #4
MBWorld Fanatic!
 
Join Date: Sep 2010
Location: Raleigh, NC
Posts: 1,170
Drives: 2005 C230K, 2006 C230
Is your car equipped with a sensor for the tire pressures? I've never noticed anything in the wheels...
__________________
Mercedes Benz World Owner's Gun Club, Member #91

2005 C230K (Diamond Black Metallic)
2006 C230 (Iridium Silver)
1974 Lotus Europa (White)
ncmudbug is offline   Reply With Quote
Old 12-20-2011, 08:54 PM   #5
Super Moderator
 
johnand's Avatar
 
Join Date: Dec 2006
Location: Camas, WA
Posts: 2,332
Drives: 2007 C230SS
Absolutely it works. I took a trip to Shasta Lake, CA last year and picked up a nail in my left rear tire. After leaving the lake and heading south to Sacramento, after ~1 mile down the highway, the Tire Pressure monitor went off. Now it didn't tell me the tire, but it did tell me to check pressure. I slowed down and ran a few more miles to the next gas station. I checked all tires, and sure enough the left rear was 6 psi low. I filled up the tire and headed down the road toward Sacramento, Just outside Sacramento, it went off again. I kept plowing through and made it to the America's tire in Roseville. Checked the pressure there and it was 8 psi low.

Drop one tire down 6-8psi and drive the car on the highway for a bit.

Oh wait, I remember, in the other thread, are you resetting the pressure monitor everytime you start the car? It is only meant to be reset when you adjust tire pressure. If you are resetting at each start, it is resetting to the lower pressure in that wheel, so it won't see a change.

Don;'t remember mine saying unavailable in acc position. I'll check tonight and report back.

Last edited by johnand; 12-20-2011 at 08:56 PM.
johnand is offline   Reply With Quote
Old 12-20-2011, 08:58 PM   #6
Out Of Control!!
 
e1000's Avatar
 
Join Date: Nov 2005
Location: OC
Posts: 18,683
Drives: a quarter mile at a time
Worked on my car too. Had to use my donut without any of my tires being bad (long story) and the system immediately went off.
__________________
e1000 is offline   Reply With Quote
Old 12-20-2011, 09:00 PM   #7
MBWorld Fanatic!
 
Join Date: Jul 2008
Posts: 6,217
Drives: 2012 Civic Si Sedan
I didn't reset each start. Mine says "tire pressure not available until ignition on" when I switch the ignition on it will very briefly say "inactive" but then says "tire pressure monitor active" and offers a reset. I might have messed it up by resetting once with a low pressure. More testing in order.
LILBENZ230 is offline   Reply With Quote
Old 12-20-2011, 10:11 PM   #8
MBWorld Fanatic!
 
Join Date: Jul 2008
Posts: 6,217
Drives: 2012 Civic Si Sedan
John you were correct. I had reset the system with low tire pressure so it was thinking that was normal. When I aired the tires back up properly and went for a drive, this happened:

Click the image to open in full size.

I reset it again with proper tire pressures and now know it works just fine.

This is the start-up process in the TPMS screen:

http://youtu.be/j9ZZbS_Ta3I
LILBENZ230 is offline   Reply With Quote
Old 12-20-2011, 10:14 PM   #9
MBWorld Fanatic!
 
Join Date: Sep 2010
Location: Raleigh, NC
Posts: 1,170
Drives: 2005 C230K, 2006 C230
You got me, now. How does the car know what the air pressure in your tire is? Does anybody know how it works?
__________________
Mercedes Benz World Owner's Gun Club, Member #91

2005 C230K (Diamond Black Metallic)
2006 C230 (Iridium Silver)
1974 Lotus Europa (White)
ncmudbug is offline   Reply With Quote
Old 12-20-2011, 10:19 PM   #10
MBWorld Fanatic!
 
Join Date: Jul 2008
Posts: 6,217
Drives: 2012 Civic Si Sedan
Sorry I overlooked your post earlier in my quest to figure it out.

Our cars do not have sensors in the wheels, but the ESP system can measure rotational differences in the tires and alert to a tire pressure issue. This is disabled from the factory, though, and to activate the feature you have to have someone hook a STAR computer up and enable it.

See the last page in my thread here: 120,000 update for more about what Trey (samaritrey) did for my car.

Last edited by LILBENZ230; 12-20-2011 at 10:33 PM.
LILBENZ230 is offline   Reply With Quote
Old 12-20-2011, 10:27 PM   #11
Super Member
 
glocati's Avatar
 
Join Date: Jul 2008
Location: Portland, Oregon
Posts: 890
Drives: 2004 C240 Wagon
Quote:
Originally Posted by LILBENZ230 View Post
Sorry I overlooked your post earlier in my quest to figure it out.

Our cars do not have sensors in the wheels, but the ESP system can measure rotational differences in the tires and alert to a tire pressure issue. This is disabled from the factory, though, and to activate the feature you have to have someone hook a STAR computer up and enable it.

See the last page in my thread here: 120,000 update for more about what Trey (samaritrey) did for my car.
Good info., Matt. I suspect this applies to 05+ MY only ? I recall no reference of this in my 04 owner's manual. Thx Greg
glocati is online now   Reply With Quote
Old 12-20-2011, 10:28 PM   #12
MBWorld Fanatic!
 
Join Date: Sep 2010
Location: Raleigh, NC
Posts: 1,170
Drives: 2005 C230K, 2006 C230
Ahhh.... very cool!!!!
__________________
Mercedes Benz World Owner's Gun Club, Member #91

2005 C230K (Diamond Black Metallic)
2006 C230 (Iridium Silver)
1974 Lotus Europa (White)
ncmudbug is offline   Reply With Quote
Old 12-20-2011, 10:32 PM   #13
MBWorld Fanatic!
 
Join Date: Jul 2008
Posts: 6,217
Drives: 2012 Civic Si Sedan
It won't be in the owner's manual because it technically is not a feature of cars here in the USA. No one is supposed to have a STAR computer but dealerships.

Drex's car is a 2004.5, so that is pre-facelift. What I read is that it has less to do with the year of the car and more to do with the ESP module. You could always try.
LILBENZ230 is offline   Reply With Quote
Old 12-21-2011, 12:03 AM   #14
Super Member
 
Join Date: Aug 2007
Location: Phoenix, AZ USA
Posts: 553
Drives: '06 C55, '13 Audi S5 Cpe, '35 Ford 5w Cpe, '48 Willys Jeepster, '53 MGTD and others
Quote:
Originally Posted by johnand View Post
Absolutely it works. I took a trip to Shasta Lake, CA last year and picked up a nail in my left rear tire. After leaving the lake and heading south to Sacramento, after ~1 mile down the highway, the Tire Pressure monitor went off. Now it didn't tell me the tire, but it did tell me to check pressure. I slowed down and ran a few more miles to the next gas station. I checked all tires, and sure enough the left rear was 6 psi low. I filled up the tire and headed down the road toward Sacramento, Just outside Sacramento, it went off again. I kept plowing through and made it to the America's tire in Roseville. Checked the pressure there and it was 8 psi low.
+1 I've had it trip an alarm something like 20 times to date. Got a nail in a rear tire up at Yosemite and then had to nurse a replacement tire that leaked worse then the one with the nail until I could get back to Phoenix to get the correct tire.
lkfoster is online now   Reply With Quote
Old 12-21-2011, 12:41 AM   #15
Super Moderator
 
samaritrey's Avatar
 
Join Date: Mar 2007
Location: McLean VA
Posts: 4,111
Drives: THE C320
samaritrey
me so sad i can't get this or the fuel tank level
__________________
Trey's Car History
87 Suzuki Samurai Gone :(
99 KIA Sportage 2Door Sold July 20 2009
97 J30 given when 16 Has been passed down to sibling
01 C320 Got at 16 as of 9-10-13 has 200,500 miles with Eurocharged Tune, AMG Style Trunk Spoiler, BIX, NAV 2.0, Tein Springs with Front Renntech Shocks and Koni's in the Rear
Next car G55 or SLK55
All About Trey and Cars Thread

samaritrey is offline   Reply With Quote
Old 12-21-2011, 12:50 AM   #16
Super Member
 
glocati's Avatar
 
Join Date: Jul 2008
Location: Portland, Oregon
Posts: 890
Drives: 2004 C240 Wagon
Quote:
Originally Posted by LILBENZ230 View Post
It won't be in the owner's manual because it technically is not a feature of cars here in the USA. No one is supposed to have a STAR computer but dealerships.

Drex's car is a 2004.5, so that is pre-facelift. What I read is that it has less to do with the year of the car and more to do with the ESP module. You could always try.
Worth having my indy with STAR take a look. thx Greg
glocati is online now   Reply With Quote
Old 12-21-2011, 12:50 AM   #17
MBWorld Fanatic!
 
Join Date: Jul 2008
Posts: 6,217
Drives: 2012 Civic Si Sedan
I understand your ESP module being too old for TPMS but not about you not having fuel level.
LILBENZ230 is offline   Reply With Quote
Old 12-21-2011, 12:53 AM   #18
Super Moderator
 
samaritrey's Avatar
 
Join Date: Mar 2007
Location: McLean VA
Posts: 4,111
Drives: THE C320
samaritrey
same issue fuel module is the old type which does not support giving gallons. If i ever replace both of them i think it would work but am not 100% sure
__________________
Trey's Car History
87 Suzuki Samurai Gone :(
99 KIA Sportage 2Door Sold July 20 2009
97 J30 given when 16 Has been passed down to sibling
01 C320 Got at 16 as of 9-10-13 has 200,500 miles with Eurocharged Tune, AMG Style Trunk Spoiler, BIX, NAV 2.0, Tein Springs with Front Renntech Shocks and Koni's in the Rear
Next car G55 or SLK55
All About Trey and Cars Thread

samaritrey is offline   Reply With Quote
Old 12-21-2011, 10:34 AM   #19
MBWorld Fanatic!
 
Join Date: Jul 2008
Posts: 6,217
Drives: 2012 Civic Si Sedan
Since this system does work and is sensitive enough to pick up changes as small as 6-8PSI, I'm not sure why this system isn't the standard rather than the one with the sensors in each wheel. That one is more complicated and frequently damaged. This system allows you to set what is normal and warns you if the car deviates. It also uses something on board and no added sensors are necessary.

If you ask me it should be this way instead of the other, even if the other is a bit more specific.
LILBENZ230 is offline   Reply With Quote
Old 12-21-2011, 01:26 PM   #20
Super Moderator
 
samaritrey's Avatar
 
Join Date: Mar 2007
Location: McLean VA
Posts: 4,111
Drives: THE C320
samaritrey
I agree but they don't make money off the sensor in each wheel and as you said they are off and not 100% acurate
__________________
Trey's Car History
87 Suzuki Samurai Gone :(
99 KIA Sportage 2Door Sold July 20 2009
97 J30 given when 16 Has been passed down to sibling
01 C320 Got at 16 as of 9-10-13 has 200,500 miles with Eurocharged Tune, AMG Style Trunk Spoiler, BIX, NAV 2.0, Tein Springs with Front Renntech Shocks and Koni's in the Rear
Next car G55 or SLK55
All About Trey and Cars Thread

samaritrey is offline   Reply With Quote
Old 12-21-2011, 02:44 PM   #21
Super Member
 
Join Date: Aug 2007
Location: Phoenix, AZ USA
Posts: 553
Drives: '06 C55, '13 Audi S5 Cpe, '35 Ford 5w Cpe, '48 Willys Jeepster, '53 MGTD and others
I think it's because Americans need to be spoon fed everything and would besiege the service departments with questions and complaints. As I recall the feature is mentioned in my '06 owners manual as present for Canadian cars. Draw your own conclusions.
lkfoster is online now   Reply With Quote
Old 12-21-2011, 03:29 PM   #22
MBWorld Fanatic!
 
Join Date: Jul 2008
Posts: 6,217
Drives: 2012 Civic Si Sedan
Several friends of mine own TPMS equipped cars with sensors in the wheels. Almost every single one of them drive around with TPMS warnings on continuously paying it no attention. Likely the sensors have gone missing during a tire change or something of that sort and they're just not concerned with it. This system would serve them much better as it is completely maintenance free.
LILBENZ230 is offline   Reply With Quote
Old 10-09-2012, 09:22 PM   #23
Member
 
johnhef's Avatar
 
Join Date: Feb 2010
Location: Frederick MD
Posts: 203
Drives: 81,84 500SEC/L 82,83 380SEC/L 86 560SEL, 84 300TD, 87 300D, 91 300D; AMG: 80 500SE 83 500SEC 97 C36
Send a message via AIM to johnhef
What versions of ESP are you guys running on the pre facelift cars that have had this work on? my car is 02/2003 and although I can code it for tire pressure loss warner in the EIS/EZL I still cant get it to come up in the ESP module (or display in the IC)- I may try and flash up newer software to the ESP if possible and see if that shows anything. Developer mode is not needed for this to work.
__________________
Master Certified Tech 12 years
johnhef is offline   Reply With Quote
Old 10-10-2012, 12:02 AM   #24
MBWorld Fanatic!
 
Join Date: Jul 2005
Location: Sydney, Australia
Posts: 3,217
Drives: W203 slightly modified
Send a message via MSN to benzmodz Send a message via Skype™ to benzmodz
Quote:
Originally Posted by LILBENZ230 View Post
Has anyone that has tire pressure loss warner coded through STAR ever actually had a warning, aside from Drex? I know several members on here have this feature turned on but after a test tonight I'm not sold that it actually works at all.

My front tires were set at 35PSI at the start of the test, and I steadily decreased the PSI in the left front and went for short drives. At 25, no warning. At 20, no warning, at 15 still no warning. Finally I dropped it to 13PSI and limped the car along a little ways and still no warning, even though the left front tire had 22PSI less than the other front and 20PSI less than both rears. There would be no dash warning necessary at this point as the car felt horrible.

Everyone knows the system is very limited and no where close to the TPMS that uses sensors in each wheel, that is understood. However now I am of the mind that this feature is not just severely limited but altogether doesn't actually work.

TPMS beats TPW by a long way. But TPW saved me before a college exam. I had a slow leak and it forced my attention to the problem. I pulled over, inserted my air compressor and put enough air in my tire to make it to my exam. After the exam I went and bought a new tire. The original one was internally damaged and perforated with a nail.

One or the other is better than nothing.
__________________
Modify your car and enjoy the benefits !
benzmodz is offline   Reply With Quote
Old 10-11-2012, 08:46 AM   #25
MBWorld Fanatic!
 
Join Date: Jul 2008
Posts: 6,217
Drives: 2012 Civic Si Sedan
I found the system to be effective. Several times it activated and revealed a real issue with the tire.
LILBENZ230 is offline   Reply With Quote
Old 10-11-2012, 08:46 AM
 
 
 
Reply

Tags
2006, c230, cclass, class, indicator, measuring, mercedes, pressure, pressures, recommanded, sedan, spare, tire, tyre, unavailable, w203



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off




All times are GMT -4. The time now is 11:52 AM.


Copyright 2001-2012 InternetBrands, Inc. / MBWorld.org. All Rights Reserved.
Everyone's Personal Details

SEO by vBSEO 3.5.2