How to Recharge a Mercedes Benz Auto Air Conditioner

1. Open your hood and locate the high and low pressure ports of your air conditioning system. These ports are located on two pipes that are attached to your condenser and are marked with an "H" or an "L" on their caps to identify which is which (high and low, respectively).
2. Remove the cap on the low side and connect the blue gauge to the port. You can remove the cap by unscrewing it by hand, then screwing the blue hose onto the port.
3. Remove the cap on the high side and connect the red gauge to the port. You can remove the cap by unscrewing it by hand, the screwing the red hose onto the port.
4. Record the PSI readings on the gauges and compare them to the recommended PSI ratings for your AC system in your owners manual.
5. Connect a refrigerant can to the yellow hose on your AC gauges and allow it to charge the system. Continue filling until the blue gauge reaches the same PSI as recommended in the owners manual.
6. Disconnect the refrigerant can, then remove the red hose, and finally disconnect the blue hose.
7. Screw the caps back onto the high and low ports.

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How to Clean a 1995 Mercedes Benz S 500 Air Mass Meter MAF

1. Open the hood of your Mercedes, and remove the negative (-) battery cable with the socket set.
2. Locate the airflow meter. It will be mounted between your Mercedes air filter and intake manifold.
3. Remove the mounting bolts that hold the MAF housing in place with the socket set.
4. Remove the hose clamp that holds the hose in place on the back of the MAF housing, and then pull the hose off.
5. Remove the MAF sensor from its housing by unscrewing the retaining bolts and pulling it free from the main housing.
6. Spray the sensor off thoroughly with the canned air, and wipe the sensor down well with a clean rag.
7. Reverse the steps to put the mass air sensor back in place.

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