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

Steer By Wire

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Old Nov 20, 2003 | 04:56 PM
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Steer By Wire

Does anybody know if W203 (C240 specifically) uses Steer By Wire technology? I know the latest E (W211) does.

My car steering wheel doesn't seem to return to a straight position whenever I make a slow turn or u-turn, release the steering wheel then accelerate. I have been wondering if it is because Steer By Wire.


Thanks,
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Old Nov 20, 2003 | 05:07 PM
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Neither car has steer by wire.


The following is from the E500 specs on MBUSA:

Steering Rack-and-pinion with speed-sensing power assist and integral hydraulic damper.
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Old Nov 20, 2003 | 06:24 PM
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Whats the benefit of steer by wire?
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Old Nov 20, 2003 | 06:39 PM
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Originally posted by coppermine
Whats the benefit of steer by wire?
It is handled by electronics which actuate electrical components to replicate the job. It is supposed to be more reliable than mechanicle components; less wear and tear, less weight, etc.
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Old Nov 20, 2003 | 07:25 PM
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Last I heard true steer by wire was illegal in the US. MB has been testing it for a few years now in concept cars, replacing the steering wheel with a joystick, but as far as I know in the US a manual connection to the steering linkage is required under law. So no the new E is not at least a true drive by wire system.
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Old Nov 20, 2003 | 08:40 PM
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Re: Steer By Wire

Originally posted by jim628
My car steering wheel doesn't seem to return to a straight position whenever I make a slow turn or u-turn, release the steering wheel then accelerate.
It is a RWD car, they behave differently compared to FWD which do tend to straighten themselves out.
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Old Nov 20, 2003 | 09:12 PM
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A little more caster in the front end will help the car straighten out when the steering wheel is released. Have the dealer check the alignment.
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Old Nov 20, 2003 | 09:37 PM
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2003 C240 4matic
Rack-and-pinion

Here is a quote from the Mercedes USA specification site for the C240.

"Steering Rack-and-pinion with power assist and integral hydraulic damper. Turning circle: 35.3 ft/10.76 m curb-to-curb"

Frank
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Old Nov 20, 2003 | 11:25 PM
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i read in a magazine that BMW will probably have steer by wire, must be rel cool though, E just has brake by wire
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Old Nov 20, 2003 | 11:45 PM
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2001 c320
Didn't a member on this board posted that the upcoming S or C class will have "by wire" everything, eg: breaks, steering, throttle?
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Old Nov 22, 2003 | 04:39 AM
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From: PHILIPPINES
07' ML350
throttle by wire-yes

brake by wire-E Class, SL.

steer by wire-hmmmm....BMW Z4 and new 5Series i guess. its not not really steer by wire, but both dont use hydraulic power steering pumps, instead..theres an electric motor....powering the "power steering" and d 5series has variable gears w/c can adjust the the number of locks during steering at varying speeds(known as active steering).

btw, FYI, the benz A Class has an electric power steering pump. mine died before, and when i opened it, it had microchips in it, i guess....those chips vary the degree of "assist" in the steering according to speed. maybe this is wat you mean.

mb also has "parameter steering option" w/c varies the assist factor.
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