Auto Repair Manual Free Download and ReviewsFree download ebook pdf files automotive manual

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The Check Engine Light came ON on my C230 Kompressor Sport Coupe; the fault code was P0170 which is Fuel Trim Malfunction fault. The Mercedes CD repair manual was a bit vague as to what to replace. An archive search of the Benz World forums indicated that the Mass Airflow (MAF) sensor could be dirty or need to be replaced. So I thought I would clean it. In order to remove the MAF it’s necessary to remove the air filter box. In hind sight if all you really want to do is clean the MAF sensor it is possible by simply taking the top of the air filter box off and removing the air filter and spraying through the MAF screen at the sensor components. To get to the Mass Airflow sensor you need to remove the air filter box. It is held in place by two bolts toward the rear and two rubber bushings in front. Other items that are attached to it are a flex duct going to the supercharger, various electrical connectors, crankcase ventilation tube and also a vacuum line that needs to be disconnected for clearance. 1. Disconnect the battery ground cable since you’ll be disconnecting several connectors. The battery is underneath the cover/filter for cabin air. You will need to resynchronize the windows and panorama sun roof. 2. There are two bolts that have to be loosened. 3. Disconnect the inlet air duct, there’s a tab on the bottom that can make it difficult to disconnect. 4. Disconnect the vacuum line by gently pressing on the outer ring and lifting. Also disconnect the nearby connector and detach one half of the connector from the stand-off bracket. 5. Disconnect the electrical connectors by pulling on the “T” handles at the front and rear of the connectors. Also unscrew the small bracket that they are zipped tied to or cut the zip tie.

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The standard equipment for model 129 includes a hydraulically actuated roadster top and a coupe roof. The switch for opening and closing the top is located on the center console. The top can be opened within approx. 30 seconds and stored in the top compartment by pressing the switch toward the rear and holding in this position or removed from the top compartment and closed by pressing the switch toward the front and holding in this position (when closing it may be necessary to “help” slightly by manually guiding the front top frame into the initial catch on the front top locks). For this purpose roll down side windows and put down roll bar and return to initial position afterward. The top moves only as long as the switch is actuated. The motion can be interrupted at any desired point and then continued or reversed. During an interruption the top is locked hydraulically so that it cannot fall down. The lock is released when the ignition is switched off and the top can be moved freely. Five opening/closing operations are possible immediately one after another. More than five operations are not possible due to the thermic load on the pump and solenoid valves. Monitoring is accomplished by counting the switch-on time for the pump and solenoid valves. Prerequisites for actuating top ignition switched on vehicle standing still battery voltage > 10 V roll bar control unit must release top actuation no malfunctions prohibiting top actuation stored in malfunction memory limit switch signals from control unit recognized as logical the maximum operating time must not be exceeded removal of the coupe roof is possible only when the time after switching on the ignition is < 10 seconds NOTE: Do not touch top linkage, upper part of windshield or top compartment

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The standard equipment for model 129 includes a hydraulically actuated roadster top and a coupe roof. The switch for opening and closing the top is located on the center console. The top can be opened within approx. 30 seconds and stored in the top compartment by pressing the switch toward the rear and holding in this position or removed from the top compartment and closed by pressing the switch toward the front and holding in this position (when closing it may be necessary to “help” slightly by manually guiding the front top frame into the initial catch on the front top locks). For this purpose roll down side windows and put down roll bar and return to initial position afterward. The top moves only as long as the switch is actuated. The motion can be interrupted at any desired point and then continued or reversed. During an interruption the top is locked hydraulically so that it cannot fall down. The lock is released when the ignition is switched off and the top can be moved freely. Five opening/closing operations are possible immediately one after another. More than five operations are not possible due to the thermic load on the pump and solenoid valves. Monitoring is accomplished by counting the switch-on time for the pump and solenoid valves. Prerequisites for actuating top ignition switched on vehicle standing still battery voltage > 10 V roll bar control unit must release top actuation no malfunctions prohibiting top actuation stored in malfunction memory

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1 Remove paneling from sliding/pop-up roof 2 Remove sliding/pop-up roof cover 3 Remove headliner
4 Pull off water drain hoses (1) CAUTION: Installation: Do not bend water drain hoses. 5 Insert assembly pliers (5) on both sides
See “Special Tool” given below. 6 Unscrew screws (2 and 3) NOTE: Installation: Do not mix up screws (2, 3). Screw on sliding/pop-up roof frame – 8 N.m 7 Pry out tilting/sliding roof frame with help of second mechanic

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Verify the roof opening panel is adjusted correctly. Is the roof opening panel adjusted correctly? ? Yes GO to E2. No ADJUST the roof opening panel. REFER to Roof Opening Panel Alignment — Horizontal Adjustment or Roof Opening Panel Alignment — Height Adjustment in this section. TEST the system for normal operation. E2 CHECK THE ROOF OPENING PANEL LIFTER ASSEMBLIES FOR OBSTRUCTIONS OR DAMAGE Check the roof opening panel lifter assemblies for obstructions and damage. Are the roof opening panel lifter assemblies OK? ? Yes GO to E3. No REMOVE all obstructions and REPAIR any damage. TEST the system for normal operation. E3 VERIFY POWER WINDOWS ARE OPERATIONAL Operate the power windows. Do the power windows operate? ? Yes GO to E4. No REFER to Section 501-11. E4 CHECK CIRCUIT 400 (LB/BK) FOR VOLTAGE Measure the voltage between roof opening panel motor assembly C917 pin 4, circuit 400 (LB/BK), harness side and ground. Is the voltage greater than 10 volts? ? Yes GO to E5. No REPAIR the circuit. TEST the system for normal operation. Measure the resistance between roof opening panel motor assembly C917 pin 1, circuit 57 (BK), harness side and ground. Is the resistance less than 5 ohms? ? Yes GO to E6. No REPAIR the circuit. TEST the system for normal operation. E6 CHECK CIRCUIT 1173 (BN/OG) FOR AN OPEN