What causes a steering whine, and trouble steering?

165

Asked by Sep 05, 2013 at 03:42 AM about the 2001 Mercedes-Benz M-Class ML 55 AMG

Question type: Maintenance & Repair

I get a whine when I turn the wheel and sometimes it gets tough steering.  There is no
fluid leak, and so I don't have to be putting in fluid.  On MBWorld, I found someone
mentioning a speed steering sensor.  I am hoping it's as easy and cheap sounding as
that but, I cannot even find this part online.  The dealership suggests to replace the
pump and rack but, I think they're trying to get the most $$ out of me.
  Any suggestions?

5 Answers

I had a Lincoln Town car, with a similar device, I don't remember what Ford calls it. It is an orifice in the high pressure hose where it connects to the P/S pump to prevent over steering at high speed, I am sure MB has a much more sophisticated way of doing the same thing, on the Town Car is was not a sensor, a simple orifice to restrict hydraulic fluid flow at high speed. That car, heavy as it was, you could turn the wheels at a stop with one finger effortlessly. Making it too easy to over steer in a panic swerve at 75mph. Which all of that doesn't come close to answering your question...90% of the time, that distinctive growl sound is low fluid, and the entire rack replace? Possible but unlikely, even in a 2001 the steering rack should not be warped..unless it's been in a collision...

4 out of 4 people think this is helpful.

This picture are some of the components of M/B Electronic Stability Control, which includes ABS brakes and a 'steering speed sensor', among other things... that may be why you found nothing in a search, looking for 'speed steering sensor'

6 out of 6 people think this is helpful.
165

fault code 197002 is what the dealership say's, and they also recommend replacing the ESP/BAS hydraulic pump, relay, & fuse. I cannot even find a price on that pump. I've never even heard of such a pump, and I've been in the automotive business for many years. Is that sensor also called a Lateral Acceleration Sensor/yaw Sensor? Found it new for $120.00 I also was told that the shifter bushings are missing. Another part I've never heard of but, then again, it's the first Benz I am about to work on so, yeah. The torsion bar plates also, which I am guessing is just another fancy word for the sway bar bushing kit. I need pretty much a replacement of all the bushings in the front end, and would like to replace the old ones with polyurethanes.

1 out of 1 people think this is helpful.
130

I don't know I'm not a Mechanic.

24,135

From what Ive read about on the ML they all seem to have this issue at some point and time. As said before from what ive seen online the the steering pumps seals start to fail and cause this whine noise.

Your Answer

Add photo

Related Questions

M-Class

Looking for a Used M-Class in your area?

CarGurus has 5,055 nationwide M-Class listings starting at $2,980.

ZIP:

Search Mercedes-Benz M-Class Questions

Mercedes-Benz M-Class Experts

#1 jihadghazali
jihadghazali
Reputation 1,130
#2 wellness
wellness
Reputation 870
#3 snowseal19
snowseal19
Reputation 580
View All

Related Models For Sale

Used BMW X5
432 Great Deals out of 16,356 listings starting at $2,000
Used Mercedes-Benz E-Class
378 Great Deals out of 21,611 listings starting at $699
Used Mercedes-Benz C-Class
489 Great Deals out of 28,570 listings starting at $1,499
Used Mercedes-Benz S-Class
143 Great Deals out of 6,564 listings starting at $1,200
Used Mercedes-Benz G-Class
12 Great Deals out of 1,119 listings starting at $24,000
Used Acura MDX
203 Great Deals out of 18,310 listings starting at $1,500
Used Jeep Grand Cherokee
1,009 Great Deals out of 72,637 listings starting at $950

Used Cars For Sale

2015 Mercedes-Benz M-Class For Sale
26 Great Deals out of 643 listings starting at $23,995
2014 Mercedes-Benz M-Class For Sale
33 Great Deals out of 1,097 listings starting at $22,800
2013 Mercedes-Benz M-Class For Sale
26 Great Deals out of 370 listings starting at $19,980
2012 Mercedes-Benz M-Class For Sale
14 Great Deals out of 370 listings starting at $17,699
2011 Mercedes-Benz M-Class For Sale
12 Great Deals out of 416 listings starting at $11,980