Valve Body Pre-Safe 2006 S500
I am new to this site as well as to blogs, but not new to Mercedes-Benz. I have had 31 of them in the past 25 years. Now I have a 2006 S500 4-matic.
My name is Kenny, and I am 48 years old from Philadelphia.
This is what I just posted to an existing thread, and, unfamiliar as I am with blogs, and having a time-sensitive issue, I thought I would copy and paste what I wrote here. Also, if someone responds to me, will I be alerted via email?
"Good morning, Gentlemen:
I am in need of some advice. I have a 2006 S500 4-matic, and, for the past 5 months, about every 2-3 weeks, I have been feeling a hard downshift when slowing down, at which point upon releasing the brakes, the dash says "pre-safe unavailable", and the car remains in a low gear. When I shut if off, and turn it back on, the message disappears, and it is fine.
I took it to my shop on numerous ocasions, but, with no codes, they are unable to see the problem in diagnostics.
About a month ago, the car started doing this more often, and, along with pre-safe, the check engine light comes on.
I took it to a Merecedes-Benz dealer, and the tech says the diagnostics are indicating that the car needs a valve-body. The car is in the shop now, awaiting my decision as to whether to do the work. My personal mechanic tells me that it is impossible to do this job for the $1100 quoted me by Benz, and have them put it back together and bring it to him. Apparentl;y, however, they have not disassembled the transmission. After Hurricane Irene, the problem happened more often, and I took it to Benz, but, without check engine nor pre-safe, and checking all modules, they found "no issues with the car", returned it to me, and two days later it goes into pre-safe almost every day now.
After reading your previous posts, I am curious as to whether this could be simply the valve body, without having to deal with the TCM. I asked them if this was a low-ball, and they assured me that the $1100 and the valve body replacement will solve the problem.
However, I am always weary of Mercedes-Benz dealers, having ownd 31 benzes over the past 25 years.
My mechanic says it's impossible, and I need to make a decision in the next 6 hours as to have the Dealer do the work, or take the car to my mechanic, who says it's impossible to fix this problem for $1100.
Please help with any suggestions.
Thank you, and I am happy to be a member of your forum. "