TRANSMISSION (MERCEDES TYPE 722.9) WILL NOT SHIFT PROPERLY. TRANSMISSION S/N 722906 00 999408. SUSPECT COMPONENT: VALVE BODY (ELECTROHYDRAULIC CONTROL UNIT). MULTIPLE VARIATIONS OF IMPROPER SHIFTING, EXAMPLES: 1. TRANSMISSION WILL NOT SHIFT AFTER VEHICLE IS STOPPED WITH ENGINE RUNNING RESULTING IN NO MOVEMENT OF VEHICLE; 2. TRANSMISSION WILL SHIFT TO INITIAL GEAR THEN REMAIN IN THAT GEAR RESULT…
2007 Mercedes-Benz CLK-Class powertrain problems
moderate 6 complaints filed with NHTSA · avg repair $2,500
Complaints
6
Recalls
0
Crashes
0
Avg fix
$2,500
What owners are reporting 2 most recent
I SLOWED DOWN TO MAKE A TURN AND THE CAR WOULD NOT ACCELERATE. IT APPEARED TO BE STUCK IN HIGH GEAR AND DID NOT SHIFT BACK DOWN TO A LOW GEAR. THIS HAPPENED TWICE OVER A 3 WEEK PERIOD. BOTH TIMES I ALMOST CAUSED A TRAFFIC ACCIDENT BY BEING STUCK IN THE MIDDLE OF THE ROAD. I TOOK THE CAR TO THE MB DEALER AND WAS TOLD IT WAS THE CONDUCTOR PLATE SENSOR BOARD THAT CONTROLS THE TRANSMISSION. THE FIX WA…
Common questions
How serious is the powertrain problem on the 2007 Mercedes-Benz CLK-Class?
It's a documented issue but not catastrophic. 6 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
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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