Vibration At Highway Speed - Mercedes-Benz Forum
 
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post #1 of 7 (permalink) Old 06-03-2015, 07:00 PM Thread Starter
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Vibration At Highway Speed

When I drive at highway speeds, there seems to be a vibration in the seat. It used to be in the steering wheel, but I don't notice it there too much anymore.
I'm hoping the wheels just need balancing, but could it be flex discs or driveshaft balancing?
Any input would be great!
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post #2 of 7 (permalink) Old 06-03-2015, 10:46 PM
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Balance the wheels, check for buckles, check the tyres, check flex disc (this last one is important you don't want one failing)

If you think it's a wheel/tyre move front to back to see if the vibration moves.
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post #3 of 7 (permalink) Old 06-04-2015, 05:30 AM
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Don't forget Engine, Transmission and Final Drive mounts.

All need to be alligned and if not can cause viabration.

Peter
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post #4 of 7 (permalink) Old 06-04-2015, 02:28 PM Thread Starter
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I've booked the car in for engine mounts and trans. mount replacement and wheel balance. Also getting a new pinion seal and diff. fluid change.
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post #5 of 7 (permalink) Old 06-05-2015, 02:20 PM
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I started a thread with the identical heading about 6 years ago. I found the same issue, and balanced the tires 3 times, replaced a wheel I was told was bent (that probably wasn't) all with little effect. I have come to the conclusion that the vibration is just what these cars do. I don't feel it with the hard top on. I don't feel it with the soft top down. I do feel it with the soft top up. I honestly believe it's the design that results in vibrations at highway speeds - it has to have something to do with the aerodynamics. Of course, your experience might be different from mine.
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post #6 of 7 (permalink) Old 06-05-2015, 03:10 PM
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Quote:
Originally Posted by Sc00p View Post
I started a thread with the identical heading about 6 years ago. I found the same issue, and balanced the tires 3 times, replaced a wheel I was told was bent (that probably wasn't) all with little effect. I have come to the conclusion that the vibration is just what these cars do. I don't feel it with the hard top on. I don't feel it with the soft top down. I do feel it with the soft top up. I honestly believe it's the design that results in vibrations at highway speeds - it has to have something to do with the aerodynamics. Of course, your experience might be different from mine.

I reached the same conclusion. If your car doesn't vibrate with the lid on, you can't fix this.
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post #7 of 7 (permalink) Old 06-05-2015, 06:42 PM Thread Starter
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Quote:
Originally Posted by Sc00p View Post
I started a thread with the identical heading about 6 years ago. I found the same issue, and balanced the tires 3 times, replaced a wheel I was told was bent (that probably wasn't) all with little effect. I have come to the conclusion that the vibration is just what these cars do. I don't feel it with the hard top on. I don't feel it with the soft top down. I do feel it with the soft top up. I honestly believe it's the design that results in vibrations at highway speeds - it has to have something to do with the aerodynamics. Of course, your experience might be different from mine.
Interesting. I suppose it's possible. Unfortunately I don't recall if it vibrates with the HT on. I guess I'll find out if the service will remedy things.
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