Electrical system of the car (VW Golf 5)

• All consumers of the on-board electrical network. Check functionality.
• Windscreen wiper blades. Check the condition of the rubber band and the resting position of the blades.
• Windscreen washer. Check the functionality and position of the jets. Add washing fluid and check the operation of the headlight washer.
• Battery. Check the strength of the fastening, the electrolyte level and, if necessary, add distilled water.
• Headlights. Check the position of the headlights and, if necessary, adjust the angle of the optical axis of the headlights (in the workshop).
• Self-diagnostic system. Read the codes of registered faults (in the workshop). For this purpose, a suitable diagnostic tester is required, for example, VW-V.4S-5051(A) or VAS-5052 with connecting cables, for example. VAS-5051/6A. The tester is connected to the diagnostic socket in the footwell on the driver's side, under the instrument panel (see illustrations 28.0 and 28.0a).
• Readout and command device. Delete old maintenance data and enter new ones (in the workshop). This operation can only be performed using a diagnostic tester.

Checking consumers of the on-board network

No special tools or devices are required.



Check the functionality of the devices listed below. If necessary, eliminate the detected malfunctions.

Depending on the vehicle configuration, some on-board network consumers may not be included in the list below.

• Lighting devices: low and high beam headlights, fog lights, direction indicators, hazard warning lights, side lights, fog lights, reversing lights, brake lights, parking lights.
• Interior lighting, glove compartment lighting, ashtray lighting, trunk lighting, ignition stuttering light, ignition stuttering light.
• Sounds a warning signal when the lights or radio are not turned off.
• All switches on the instrument panel and center console.
• Instrument panel with all indicators, meters, lights and backlighting.
• Sound signal.
• Windscreen wipers and washers, headlight cleaner.
• Front and rear cigarette lighter.
• Electrically adjustable and heated exterior rear-view mirrors.
• Electric windows.
• Automatic sunroof.
• Central locking, remote control.
• Seat position adjusters, as well as a seat belt position adjuster.
• Seat heaters.
• Radio.

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