How to replace the heater of BMW 520 in 2005

If the antifreeze is not maintained on time or cheap antifreeze products are used, it will easily lead to the corrosion of the vehicle warm air tank (commonly known as small water tank, which is used to exchange heat and form warm air). It is easy to leak after corrosion, which leads to wet marks on the cab floor, usually near the accelerator pedal. At the same time, due to the odor of antifreeze and infiltration into the air duct, there is often an odor when the air conditioner is turned on. At this point, it can basically be judged that the heater tank is leaking.

\ r \ n \ r \ Because the heater water tank and the whole fan assembly are located in the middle of the vehicle, under the dashboard, the whole dashboard must be removed to lift the vehicle smoothly. In good conditions, it usually takes two hours to disassemble a dashboard, 40 minutes to replace it and two hours to put it back, so the owner needs to prepare for a day's maintenance when he encounters this problem.

\ r \ n \ r \ When removing the instrument panel, the fuse, air duct, glove box, center channel, radio, instrument, middleware, steering wheel and other accessories. It should be removed, and then the three screws on the dashboard should be removed, one of which is in the clock and there are two screws on the other two sides. After disassembly, several cables controlled by the air duct should be loosened, and the cables can fall through the removed accessory space. Then the instrument can be lifted smoothly.