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PointedThree :  Vans, Trucks, SUVs and Other Forums : G-Class : early morning trip, wheel sensor?

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early morning trip, wheel sensor?
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Posted 4/11/2007 2:40 PM
KERR

Date registered: Dec 1899
Location:
Vehicle(s):
early morning trip, wheel sensor?

So I get a call last night from a guy that has a gear vendors over drive kit... long story short I told him I would take it...

So I got early this morning and headed out on my little trip. I covered 325 miles round trip. One part of the road was a nice two lane. about 45 miles one way up the mountain i noticed the G gets a lovely 8.9 mpg at 48 mph .... I passed over elevation of 3,000 in fog so thick you could not see 10 feet in front of the car, ( got to love that rear fog light!!) then the snow started.... had a nice drive and only scared my self a few time in the sharp turns with cliffs on the side that god only know how far the drop was. I passed by a place motel that looked like they filem porn there or it could be used for a horror moving with a big sign that said welcome to lovers leap…

I stopped twice, once to get directions to see if there was a way back out of this town with out taking the mountain.. While there I was ask twice what the heck that thing is im driving. One lady about 85 years old said it was the ugliest “van” she has ever seen( picture where’s the beef lady from the early 90’s tv commercial) Then when I got back onto I-77 I stopped for fuel at $3.01 a gallon. While filling up with a old pump handle that has no automatic hold feature so im starting to smell like the inside of my gas tank, not to mention no rubber thingee or stopper so when the tanks full it just pours out on your feet..

two men said “ A son what the hick kid of jeep that is”.

I said its not a jeep it’s a Mercedes.

There reply was

“bull xxxx, Mercedes makes them dare high dollar vehick-ulars ( think vehicles but drop the LES and Binoculars but drop the BINOC ) that ait no one can afford but them welloff rich people, Iz tell uins ( pronounced you-in-Z ) what I would do with a car dat cost dat much… I buy me’s a john deer and put hot tub at my trailer… it’s a big one.. 12X40.. got the biggest one in the trailer park… How much one of them cost new? About $18,000. Mean time his friend is popping his teeth back in after he just finished whipping them off with a paper towel out of the box that holds the windshield washer thing…

At any rate having covered 90 miles of two lane road some behind rigs at 25 mph i have come to the conclusion I have a bad speed / wheel sensor. While on the mountain I could turn right or left with no esp blinking as long as I was on the break or gas. Once I let up pressure the light is triggered it also does the same thing with the gas but as long as you reapply the throttle the light is fine. If its real quite you can hear a clicking and an errt sound from a computer or something… again this was all at slow speeds and no where even close to turning over or sliding.

example.... driving down the road see a turn coming up, You apply the breaks and keep them on about half way threw the turn. You let up on the break pedal and the esp light comes on and puts the brakes on weather you need them or not. During this process you have not changed the steering at all.

So any suggestion on how to check this… its noting new. Its done it since 297 mile. But it does not get any better or worse with any size tires or wheels.. also the steering wheel has no effect on it either..
#69761
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Author
Posted 4/11/2007 5:17 PM
GwagenLover
Extreme Veteran


Date registered: Apr 2006
Location: Winston Salem, NC USA 27104
Vehicle(s): 2016 G550 & 2016 GLE350
Posts: 473
300
RE: early morning trip, wheel sensor?

Kerr,
I have to say I loved the yarn you spin. Thing of it is, I believe you. and got a huge kick out of the tale.
I hate to be the one to break bad news, but I think you are off to a visit to your Mbenz repair shop. I guess you should have traded it last week before this happened.
I was talking to a ford salesman last week at a local Burger King during lunch time. He told me that the Ford shop guys are getting $90/hour for the labor.
A friend had a Ford F250 that the horn would not work. We could feel the click of the relay, but could not locate it. Come to find out, Ford imbeded the relay in the fuse block. Cost $500 plus 2 hours labor to fix it. I guess we are being taken to the proverbial cleaners.
Last time I asked, the Benz guys were at $88/Hr.
That sensor will ending up costing you a bunch of $$$$
Shucks Kerr, it will only hurt a little bit, but look at it like this, you can just write it off as a business expense.
I know I would if I could.
I guess you need to put a bike rack on your Gwagen and then you could pedal home after you drop off the G Just kidding.
Some things were just meant to be.
#69780 - in reply to #69761
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Posted 4/11/2007 5:31 PM
MarcO
Elite Veteran




Date registered: Apr 2006
Location: Irvington, NY
Vehicle(s): G 500 SWB, Volvo XC90 V8
Posts: 835
500
Re: early morning trip, wheel sensor?

They kept replacing a wheel sensor on my right front wheel. When the ESP light went out the ABS light started doing a dance and they said it was a "common problem". Also said it was the same sensor and that there was an adjustment in the software that kept getting redone (they were on rev.8.7 or some such crap). Even with a new brain it still was chewing up front right wheel speed sensors and they even tried to get me to pay for a few. I just laughed and told them to take it off the bill which they did.
#69786 - in reply to #69761
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Posted 4/11/2007 5:32 PM
MarcO
Elite Veteran




Date registered: Apr 2006
Location: Irvington, NY
Vehicle(s): G 500 SWB, Volvo XC90 V8
Posts: 835
500
Re: early morning trip, wheel sensor?

Oh, and you want to know why it is no longer mine, huh
#69787 - in reply to #69761
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Posted 4/12/2007 9:39 AM
KERR

Date registered: Dec 1899
Location:
Vehicle(s):
Re: early morning trip, wheel sensor?

well mine has done it for ever... no joke warranty claim at 256 miles or something like that.. Less than 300 miles it was back for this problem.. I have posted a few times about it and tried all the suggestions with no luck. IM glad i dont drive the truns ever day or i this G would be sold for sure...

#69848 - in reply to #69761
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Posted 4/12/2007 12:01 PM
4x4abc



Date registered: Apr 2006
Location: La Paz, Baja California, Mexico
Vehicle(s): 02 G500
5000
Re: early morning trip, wheel sensor?

because of its weight and very high center of gravity the ESP of the G is programmed differently than the other Mercedes vehicle classes. To prevent loss of control and possible roll over, the ESP cuts in fairly early (compared to other vehicles). Conservative engineering to keep you alive.

Now, if you are used to drive fairly aggressively (I would assume that Kerr loves to put the pedal to the metal), you will hate the G. I remember some early 2002 posts where owners complained that they could not drive a freeway off ramp at the same speed as they were used to in their S-Class.

As soon as you throw on larger tires (and Kerr switched some time ago) ESP will go nuts unless you are able to feed the new numbers to the computer (can be done within limits at your dealer - if they feel like it).

I have written about this ESP behavior a couple of times since I have pretty large tires as well (295/75R16 - about 33+").

flat county at high speeds = no problem
high speed turns, especially with the foot on the gas = no problem
high speed turns, foot just taken off the gas = some ESP interference

Uphill in tight turns accelerating = no problem (even when accelerating hard)
downhill in tight turns, especially when letting off the gas = aggressive ESP interference including engine torque reduction

Just touching the brake (and I do anyway since I drive with both feet on mountain roads) will make the ESP stay way back (it will interfere when it deems it necessary). I guess that the program has been written assuming that when the driver is on the brake, he is actively controling the situation and ESP is held back. Whereas, when going downhill into tight turns with no gas and no brakes the program interpretes that as "driver not paying enough attention" and interferes when the thresholds of gyro, actual speed, wheel speed feedback and steering angle are reached. And they are reached early as the program is very conservative.

So, I don't think there is anything wrong with Kerr's wheel speed sensors.
#69859 - in reply to #69848
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Posted 4/12/2007 2:30 PM
KERR

Date registered: Dec 1899
Location:
Vehicle(s):
Re: early morning trip, wheel sensor?

see thats the catch though. no matter what wheels / tire set up thats on the G the esp acts the same. It also does for all drivers.

I just need to get a video of it i guess.
#69875 - in reply to #69761
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Posted 4/12/2007 2:53 PM
MarcO
Elite Veteran




Date registered: Apr 2006
Location: Irvington, NY
Vehicle(s): G 500 SWB, Volvo XC90 V8
Posts: 835
500
Re: early morning trip, wheel sensor?

Harald -

Your description is perfect for my gray 02. BUT my 05 55K and my silver 02 were no where near the same. In fact the sliver one really never had this problem with the stock tires and the 265/70/16 on the gray did make it much less likely to happen. The dealer just loved to replace this sensor though. I do not think I have seen the ESP on the 55 except once or twice when I was having so much fun doing doughnuts in snow.

I think there is something very different about the programming of the 02's. Maybe I am wrong. JMHO.
#69878 - in reply to #69761
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Posted 4/12/2007 3:04 PM
MarcO
Elite Veteran




Date registered: Apr 2006
Location: Irvington, NY
Vehicle(s): G 500 SWB, Volvo XC90 V8
Posts: 835
500
Re: early morning trip, wheel sensor?

On second thought maybe just dark colored 02's!
#69879 - in reply to #69761
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Posted 4/12/2007 11:06 PM
4x4abc



Date registered: Apr 2006
Location: La Paz, Baja California, Mexico
Vehicle(s): 02 G500
5000
Re: early morning trip, wheel sensor?

Kerr,

your reading is a bad as your writing.

Stock tires = no problem
stock tires and very aggressive driving = some ESP interference
larger tires = normal driving = ESP will go nuts
larger tires plus spirited driving = ESP will almost stop the engine
#69931 - in reply to #69875
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Posted 4/13/2007 10:33 AM
KERR

Date registered: Dec 1899
Location:
Vehicle(s):
Re: early morning trip, wheel sensor?

No i can read fine.. i just have POS G500. becuase it falls in your larger tires plus spirited driving = ESP will almost stop the engine" catagory with stock tires and my mom driving...

example pull out of the drive way.. make slight left hand turn.. BLINK BLINK.... ERT ERT ERT of the computers... and we are going about 25 mph...
#69978 - in reply to #69761
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Posted 4/13/2007 11:37 AM
W5YK
Extreme Veteran




Date registered: May 2006
Location: San Diego
Vehicle(s): 2002 G500, Unimog U2450,
Posts: 543
500
Re: early morning trip, wheel sensor?

I have found that I can anticipate when the ESP is likely to start bossing me around. It does not like indecision on the part of the driver. If you are firmly on the gas, or on the brake, it is unlikely to come on. If you dither, it feels the need to assert itself. Going downhill, turning to the right, as on US freeway cloverleaf exits, is the most likely to upset it.

The female voice on the NAV system (the "Navigatrix" my wife calls her) is harder to predict. It will demand random turns for no reason, or tell you to turn left in the middle of the freeway.
#69981 - in reply to #69978
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