Try
www.haynes.com or
www.haynes.co.uk
the Title reads Mercedes Benz C180, C200, C230 & C250
Book # 3511
for right hand drive models , but still excellent for U.S cars.
If you were thinking of pulling a crank shaft, or replacing a steering column, I would say this book would NOT suffice, tho it does describe these jobs.
But it is an excellent source of info, and it is easy to purchase and cheap