Electrical equipment and devices of the car BMW 7 Series E32
Heating system. general description Outside air for heating is drawn in through the intake grille of the cabin air filter housing under the front window and then blown into the passenger...
Heater temperature sensor — removal and installation Withdrawal Remove the heater control unit. Remove the temperature sensor plug. Tilt the temperature sensor back and pull it out. Installation Insert the...
Climate control Elements of the air conditioning system (air conditioner) 1 - fan; 2 - evaporator; 3 - throttle; 4 - low pressure service connection; 5 - high pressure service...
Electrical equipment. general information When checking the details of an electrical system, it is necessary to have an understanding of the basic electrical terms: voltage, current and resistance....
Measuring instruments For measurements on an automotive electrical system, a universal measuring device is best suited - a multimeter, ampere-voltmeter or tester. It combines a...
Measurement technique Voltage measurement The presence of voltage in the circuit can be checked with a simple test light or probe, but a voltmeter is needed to determine the...
Troubleshooting in the electrical system If you suspect a malfunction in electrical equipment, you need to diagnose slowly and systematically, without missing obvious causes. The first step should...
Fuses — Replacement To prevent short circuits and overloads in wires and current consumers, some circuits are protected by fuses. The fuses are located in the fuse box, which is...
Battery — removal and installation Attention: When disconnecting the wires from the battery, you can erase data from the electronic memory units. The radio tune-in data, clock setting and...
Instructions for handling a maintenance-free battery The BMW 7 Series is equipped as standard with a maintenance-free battery. With this battery, as part of maintenance, it is no longer necessary to add distilled...
Battery — check Checking the electrolyte level The electrolyte level in individual jars must be between the MIN·marks (1) and MAX (2). If necessary, unscrew the AB plugs (3)...
Battery — charge Items marked with black diamonds are not performed on an unattended battery. BMW vehicles are equipped as standard with maintenance-free batteries. Attention:...
Generator. general description BMW vehicles are equipped with alternators. Depending on the model and configuration, a generator with a return current of 80.95 or 145 A can be installed. The...
Alternator voltage test Connect a voltmeter to the AB contacts. Start the engine. Voltage may drop to 8V during startup (at +20°C). Increase engine speed to 3000 rpm. The voltage...
Generator — removal and installation Withdrawal Disconnect the negative cable from the battery. Isolate the negative battery terminal to prevent accidental connection. Remove the air filter....
Starter. general description Bosch starter elements 1 - collector body; 2 - brush holder; 3 - a set of carbon brushes; 4 - ceramic-metal bushing; 5 - cap; 6 - excitation winding; 7 -...
Starter — removal and installation The starter is located on the side at the junction of the cylinder block and gearbox, and it is removed downwards. Withdrawal Disconnect the negative cable...
Traction relay — check, removal and installation In the event of a malfunction of the traction relay, the gear in the starter will not engage with the flywheel ring gear, i.e. the starter will not be able to...
Starter Troubleshooting If the starter does not rotate, then, first of all, you need to check if there is a voltage of at least 10 V required for operation on terminal 50 of the...
Wiper rubber bands — replacement The rubber bands of the wiper blades must be replaced if the glass is not properly cleaned. On sale are both assembled brushes and rubber bands separately. If...
Wiper motor — removal and installation Withdrawal Remove the wiper drive mechanism. Unscrew the nut from the crank shaft and remove the crank. Remove the three wiper motor mounting bolts and remove...
Windshield washer 1 - filling hole cover; 2 - grid; 3 - channel for ventilation; 4 - bushing of the water tank (liquids); 5 - plastic nut; 6 - water tank; 7 - washer pump; 8 -...