- When carrying out welding work or any other work involving the formation of sparks, be sure to disconnect the battery (positive and negative cables) and carefully insulate both terminals (-) And (+). When working near the battery, it must be removed. Without a code, the radio can only be switched on by its manufacturer or a Mercedes-Benz workshop;
- When welding galvanized sheets, toxic zinc oxide is formed. Therefore, it is necessary to ensure good ventilation of the workplace. Increase welding current by 10 (maximum 30) percent. Use solid copper electrodes with high heat resistance (above + 400°C). Clean the electrodes frequently and grind them down to a contact surface diameter of 4 mm. Increase the pressure on the electrode. Increase welding time. The time is correct if the welding points are placed without spatter;
- Air conditioner parts filled with refrigerant must not be welded or soldered with either soft solder or hard solder. This also applies to situations where there is a risk of heating of air conditioner components when welding or soldering other structural components.
Attention! When the battery is removed, the data from the electronic memory units are erased, in particular, the radio code!
Additionally
Do not open the cooling circuit of the air conditioner, as refrigerant can cause frostbite if it comes into contact with the skin.
When applying a paint coating in a drying oven, the vehicle must not be heated to temperatures above + 80°C. Otherwise, the vehicle electronics may be damaged. In addition, the pressure in the air conditioner increases, which can lead to the destruction of the system.
The protective coating of the bottom of the car made of PVC is removed with a rotating steel brush or hot air with a temperature of up to + 180°C using a spatula. When the PVC coating is heated to a temperature above 180°C, a chemical reaction occurs and hydrochloric acid is formed, which contributes to the active development of corrosion, in addition, harmful vapors are formed.