Before disconnecting the battery, you should check the code combination of the car radio, since it can only be restored at the manufacturer's factory. The contents of the memory devices of other electronic devices in the car may also be lost, so you need to remove the ECU from the car.
Use only spot welding methods. In cases where this is not possible, gas-shielded arc welding may be used as an exception.
Welding of galvanized parts must be carried out under conditions of supply ventilation, since zinc oxide vapors released during welding are toxic. In addition, it is necessary to take into account the technological requirements associated with the specific features of welding galvanized parts (increase in welding current by 10–30%, use of heat-resistant – up to 400°C – electrodes made of solid copper, stripping of electrodes until a reliable contact spot with a diameter of 4 mm is formed, increase in welding time).
Caution! It is prohibited to weld or solder air conditioning system components filled with refrigerant.
This article is taken from the website: RenaultBook.ru