MY TRANSMISSION WOULD NOT SHIFT OUT OF SECOND GEAR. I TURNED IT OFF AND BACK ON AND IT DID NOT CLEAR. I GOT A "PRE-SAFE UNAVAILABLE" MESSAGE. I DID SOME RESEARCH AND LEARNED THIS IS A "TRANSMISSION CONTROL MODULE" FAILURE. IT IS VERY UNSAFE IN THAT THE CAR CANNOT KEEP UP WITH TRAFFIC AND IS A DANGER TO MYSELF AND OTHERS. *TR
2006 Mercedes-Benz S-Class powertrain problems
severe 5 complaints filed with NHTSA · avg repair $2,500
Complaints
5
Recalls
0
Crashes
1
Avg fix
$2,500
What owners are reporting 2 most recent
DT: THE CALLER SAID VEHICLE SEEMED TO SHIFT INTO A LOWER GEAR WHEN DRIVING BETWEEN 30 AND 40 MPH. WHEN THIS HAPPENED VEHICLE BUCKED FORWARD. THE CALLER PULLED OVER AS SOON AS SHE COULD BECAUSE SHE DID NOT KNOW WHAT WAS CAUSING THIS PROBLEM. IT HAPPENED 5 TIMES, TWO TIME IN JUNE, ONCE IN JULY AND TWICE IN AUGUST. THE DEALER SAID NOT TO WORRY ABOUT IT. MANUFACTURER HAS NOT BEEN CONTACTED YET.…
Common questions
How serious is the powertrain problem on the 2006 Mercedes-Benz S-Class?
It's a meaningful issue. 5 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $2,500.
At what mileage does the powertrain typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Other problem areas on this vehicle
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Severity ratings are derived from reported crashes, fires, injuries, and fatalities.
Repair cost estimates are independent-shop national averages and may differ in your area.
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