To be honest with you I would leave it alone. You don't need the SLS system. I know people on this webiste that with argure that it is a great system. From my experience nothing beats standard suspension. I have a 560 SEL with suspension problem and I have spend $$ with no results. I have 84 euro 500 SEL that have reqular shocks that ride and handle much much better. I was not wise enough to get rid of the system before I spend the money trying to fix it on the 560 SEL