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To unlock the radio in your 2003 Mercedes SLK230, first turn on the ignition without starting the engine. Then, switch on the radio; it should display "CODE" or "ENTER CODE." Use the radio preset buttons to enter your security code. After entering the correct code, the radio should unlock and begin to function normally.
Code usually means there is a bad mass air sensor. Replace sensor and code resets. Make sure the car has clean air filter and filter box is also clean.
Yes
The M111.974 engine fitted to the 2003 R170 Mercedes-Benz SLK230 uses the Eaton M45 Roots-type supercharger.
About 6.3 US quarts
It is self adjusting.
The SLK230 Kompressor has a 2.3 L (2295 cc) 197 hp I4 supercharged engine.The SLK320 has a 3.2 L (3199 cc) 218 hp V6 engine.
You need the 5-digit code for the radio. The system locks when power has been disabled or the radio removed from the vehicle. Call a MB dealership. I have the same problem with my '99 SLK230. I know the code too. The book says if power has been interupted and the code has been entered incorrectly more than 3 times, the system will lock itself out. However, the book also says that once the radio is on again it should reset itself in 10 minutes or so. I have let my car run with the radio turned on for more than 30 minutes and it didn't reset so I could enter the code. Now, does anyone know how to fix this?
No, it's a chain driven motor, no timing belt.
There is a code and go to code junkies and you will find it !
it depends on whos driving the cars.