Cruise Control 1997 SL500 - PeachParts Mercedes-Benz Forum

Deneals · #1 11-11-2004, 10:37 PM

On my first over-the-road trip after replacing a couple tires, my cruise control stopped working.

It is intermittant, seems like it will hold speed for a second or two and then disconnect.

In searching the archives, I found an owner of a C180 who had a similar problem was told that different tire sizes will cause this, but there is no resolution or verification in the files.

This seems absurd to this analog-minded owner. Could this really be a cause for Cruise Control failure?

I just installed new Yoko Avid 225 x 55 x 16 on the rear axle. The fronts have goodyear eagle 225 x 40 x 16.

I can't believe this could be a possible cause. H E L P !!!!

RConrad · #2 11-12-2004, 10:46 AM

I'am not replying to your speed control problem, although the tire size differences may very well be the problem, what with all the different electronic gizmo's that are in play. As you also have an SL, I would ask if you are having any problems with the top rubbing the small rear plasti windows when you put the top down? See my notice just before yours on the board. Any input would be welcome, Thanks, Ron

#3 08-09-2005, 07:53 PM

not sure if you have corrected the problem. I had similar problem and it was my tire sizes. I had a larger size than Mercedes recommended. Changed the tires and the cruise worked as designed

mbdoc · #4 08-10-2005, 08:39 AM

Have you tried the cruise at 25-30MPH??

IF it works at that speed but cuts at higher speeds then the tires are the problem!!

Deneals · #5 08-10-2005, 04:58 PM

Quote:

Originally Posted by M.B.DOC

Have you tried the cruise at 25-30MPH??

IF it works at that speed but cuts at higher speeds then the tires are the problem!!

If you check what I had originally written, I had looked in the archives and found a similar problem on a Euro W202. I was trying to get someone to verify this could be the problem with my R129. No one wrote until this week, some months after the initial problem.

What I tried, in order to remedy the problem, was to buy another pair of matching Yokos. The cruise control then operated normally. And its worked well through many trips since then between Cincinnati and St Louis, and a trip from St Louis to Key West and back!

Thanks for writing!