As it says under the hood where you expect it to be: Battery located in trunk.
Look near the spare tire, under the trunk floor.
Bring to dealer for repair
http://www.installuniversity.com/mb/w203/w203/fp.html
MB C240 is every 13,000 miles.
http://www.installuniversity.com/mb/w203/w203/ps.html
http://www.mbusa.com/vcm/MB/DigitalAssets/pdfmb/ownersmanual/2003_ml320_ml350_ml500_ml55amg.pdf Page 271
The bolt pattern is 5 x 112mm. So far as I know this is standard for all MB's. The bolt diameter is 12mm.
To replace the ignition switch on a 2001 MB C240, first disconnect the battery to ensure safety. Remove the steering column covers by unscrewing the necessary screws, then locate the ignition switch, which is typically mounted near the ignition lock cylinder. Disconnect the wiring harness and unscrew the ignition switch from its mount. Replace it with the new switch, reattach the wiring, and reassemble the steering column covers before reconnecting the battery.
For a 2004 Mercedes C240, it is recommended to use synthetic motor oil with a viscosity of 0W-40 or 5W-40, meeting the Mercedes-Benz specification MB 229.5. Using high-quality synthetic oil can help ensure optimal performance and engine protection. Always check the owner’s manual for any specific requirements or recommendations.
The Mercedes-Benz C240 typically requires a specific type of power steering fluid known as ATF (Automatic Transmission Fluid) that meets the MB 236.1 specification. It's crucial to use the recommended fluid to ensure optimal performance and prevent potential damage to the steering system. Always check your owner’s manual for the exact specifications and recommendations for your vehicle.
On inline engines such as the Mercedes 5 cylinder engine, the number one cylinder is at the front of the engine (where the pulleys and belts are), and the cylinders are then numbered sequentially toward the rear of the engine, i.e. 1 2 3 4 5. The number 5 cylinder on your MB 2.4 liter 5 cylinder would be the one at the engine's rear.
The cast of MIB ADR - 2002 includes: Tim Blaney as himself Lara Flynn Boyle as herself Johnny Knoxville as himself Will Smith as himself Barry Sonnenfeld as himself
$250 @ MB according to forum