This is from my Heater Removal and Install tutorial Posted Here http://http://www.benzworld.org/forums/w201-190e-d-class/1358724-mercedes-190-e-d-201-heater-core-removal-install-tutorial.html
Set the front wheels strait disconnect the cable form the negative terminal of the battery. 2.
On later models remove the air bag and unbolt the steering wheel. On early models Use a small screw driver and remove the trim motif from the center of the of the steering wheel. 3.
Use an Allen wrench socket and extension and remove the wheel retaining bolt. 4.
Remove the wheel from the shaft.
Remove the cover under the dash on the drivers side. Looking under the dash find and remove the left hand air duct. 6.
Reach up behind the dash and unscrew the speedometer retaining nut on the back of the instrument panel and detach the cable from the speedometer head. 7.
Push out the instrument panel from the rear to release the five retaining clips. 8.
Remove the electrical connectors form the instrument panel mark them so u know where they go for reassembly 9.
Remove the panel from the car.
Pry out the glove box lamp and disconnect it. 11.
Remove the 2 screws holding the latch bracket. 12.
Remove the plastic clips by prying up on the top to release it and then remove it. 13.
Remove the glove box make sure to feed the light wires thru.
Center Dash Console
Remove the center vents using a needle nose pliers surrounded by a rag, they just pull out. 15.
Locate the bolt located in the slot of the center vent lever with the vents closed remove it. 16.
Remove the two screws holding it up to the dash. 17.
Remove the two screws holding it to the transmission tunnel on either side. 18.
Pull the whole unit forward. Unplug the connectors to the rocker switch, the fan switch, the two pushbutton unit connectors, the two ashtray connectors, and anything else you see in the way, including the radio.
Remove the passenger side cover located under the dash it will be held by three screws remove the plastic caps covering the screws to gain access remove the screws then remove panel. 20.
Pull back the weather striping on the front pillar on both sides. Remove both front pillar trim panels by prying the clips loose. 21.
Remove the retaining screw and remove both speaker grilles. 22.
Remove both upper retaining bolt on both sides of the dash adjacent to the speakers. 23.
Uses pliers and a cloth pull off the headlight switch **** remove the nut unplug and remove switch. 24.
If equipped pry out the headlight beam adjustment switch disconnect and remove making note of connections 25.
Pry out rear dome light switch unplug and remove. 26.
Remove the 2 side retaining bolt located on each side of the dash at the bottom. 27.
Pull the air duct for the passenger side outlet. 28.
Disconnect the glove box lamp switch wires. 29.
Remove the bolt on the underside of the dash securing it to the body stiffener. 30.
Pull the hose off the rear of the center vents. 31.
Carefully pry off the ignition trim ring, 32.
Remove the retaining bolt form behind the glove box cover and the inner nut at the bottom right hand side. 33.
Pull out the demister nozzles on the heater box and remove dash from car slowly making sure that nothing was missed.