Technikfragen Klasse B - Praktische Prüfung

Technical Questions Before Practical Exam

Tire Inspection

• The examiner may ask about tire inspection, focusing on the tread depth, which must be at least 1.6 mm to meet legal requirements.

• Inspect for even wear and any damage on the sidewalls; check for foreign objects lodged in the tires.

• Check tire pressure; this information is typically found on a sticker inside the driver's door, indicating required pressure levels based on passenger load.

• Seasonal tire checks are important; ensure appropriate tires (summer or winter) are installed according to the time of year, indicated by symbols like a snowflake for winter tires.

• Remember four key points: tread depth (min. 1.6 mm), damage assessment, proper air pressure, and seasonal suitability of tires.

Lighting System Overview

• The examiner will likely inquire about vehicle lighting; candidates should know how to operate all lights correctly.

• In a VW Polo example, turning on the ignition activates daytime running lights automatically; understand different light settings including automatic mode.

• Familiarize with various light functions: parking lights (standlicht), low beam (abblendlicht), fog lights (nebelscheinwerfer), and their specific usage conditions.

• Understand headlight height adjustment for heavy loads to avoid blinding other drivers; adjust accordingly based on vehicle weight distribution.

Vehicle Inspection Procedures

Checking Fog Lights

• To check the fog lights, turn on the ignition and activate the lights. Pull out a latch to ensure they are functioning properly.

• The examiner will ask to check the horn by pressing it; it's noted that some vehicles allow this without ignition.

Light Functionality

• The vehicle's rear lights do not change appearance when switching between parking and low beam headlights.

• For checking brake lights, engage reverse gear with ignition on, and have an instructor press the brake pedal while you observe from outside.

Reflectors and Visibility

• A practical tip is to use reflections in shop windows to verify if your vehicle's lights are operational daily.

• Check for reflectors (cat's eyes), which are integrated into standard lighting systems or located at the bottom of bumpers.

Power Steering Check

• To test power steering functionality, start with the engine off; turning should be difficult. Once started, it should become easier as the pump engages.

• Ensure to depress the clutch before starting if testing a car with automatic start-stop features.

Steering Play Assessment

• After ensuring no engine shutdown occurs during idle, assess steering play by moving the wheel slightly without affecting wheel movement—ideally no more than 3 cm or two fingers' width.

Finalizing Vehicle Security

• At inspection completion, secure the vehicle by engaging first gear and applying handbrake before removing keys to lock steering column.

Ignition Lock Mechanism

• If attempting to start with tension in steering lock, hold it steady between stops for key rotation; otherwise, it may break under pressure.

Brake Booster Functionality Test

How to Check and Operate Vehicle Brakes

Starting the Engine and Brake Functionality

• The process of starting the engine requires pressing both the brake and clutch pedals. The brake pedal should noticeably give way when starting.

• The brake booster assists in braking; testing it involves attempting to drive against an engaged handbrake, which should hold the vehicle effectively.

Conducting Brake Tests

• A proper brake test is essential; after fastening the seatbelt, one should move a few meters forward before applying brakes firmly while ensuring safety checks like signaling.

• To check brakes while stationary, press down on the brake pedal. There should be a firm resistance after one-third of its travel, indicating proper functionality.

Handbrake Inspection

• Similar to foot brakes, checking the handbrake involves releasing it while pressing the foot brake to feel for resistance; it should not easily go all the way down without feedback.

Opening and Inspecting Under the Hood

• To open the hood, first secure any clothing (like zippers), then pull a lever located in the footwell while ensuring that doors are open for access.

• After opening, ensure that additional safety latches are disengaged; these can vary by vehicle model but are typically found near or on top of the hood.

Checking Fluid Levels

• Various fluids under the hood need inspection: oil levels can be checked using a dipstick; coolant levels must be between minimum and maximum markers.

• Windshield washer fluid needs replenishing with appropriate winter frost protection fluid distinct from coolant used in radiators.

Battery and Oil Checks

• Ensure battery connections are secure without any looseness. Inspect terminals for tightness as well as cleanliness.

• For oil level checks, ensure that the engine is off and has been stationary for some time. Clean off dipstick before measuring oil level accurately against minimum/maximum indicators.

Additional Maintenance Insights

• If low on oil, add approximately half a liter to maintain optimal levels between markings on dipstick.

• Brake fluid levels require careful monitoring; if low, consult a mechanic as this could indicate wear or leaks within braking systems.

Closing Procedures and Wiper Operations

• To close the hood securely after inspections, re-engage safety pins properly before letting it drop from a height of 15–20 cm.

Automated Wiper Features and Emergency Equipment

Wiper Functionality

• The vehicle lacks an automatic rain sensor, which would typically adjust wiper speed based on rainfall intensity. Instead, it has manual settings for wiper operation.

• There are multiple settings for the windshield wipers: one for standard wiping, followed by three increasing speeds for faster wiping action.

Emergency Equipment in the Vehicle

• Essential emergency equipment includes a warning vest, which is recommended to be stored in the vehicle for immediate access during emergencies.

• A first aid kit is present in the vehicle; it must have a valid ISO or DIN number (specifically noted as DIN 13164), ensuring compliance with safety regulations.

• The first aid kit has an expiration date of November 2026, indicating its usability until that time.

Safety Checks Before Practical Examination

• During practical driving tests, examiners may ask about the functionality of safety equipment like the warning triangle. It's crucial to ensure all items are operational and compliant with regulations.

Conclusion and Video Engagement