VW Preventive Maintenance Procedures 3

Question 1

When replacing the engine air filter on a VW with a MAF sensor, what precaution must be taken during reinstallation?

Accepted Answer

Ensure the filter housing is sealed with no air leaks around the MAF sensor

Answer

Any air leak between the MAF sensor and throttle body after filter replacement will cause inaccurate airflow readings and drivability issues.

Question 2

During a VW scheduled maintenance, the technician checks the battery using the VAS tester. The result shows 'Battery OK, Charge Fault.' What should be done next?

Accepted Answer

Inspect the charging system and alternator output

Answer

A 'Charge Fault' result indicates the alternator or charging circuit may not be maintaining proper voltage, requiring a charging system inspection.

Question 3

What is the recommended VW procedure for inspecting drive axle boots during a preventive maintenance service?

Accepted Answer

Visually inspect for cracks, tears, and grease leakage with wheels turned full lock

Answer

Turning the wheels to full lock exposes the outer CV boot fully, allowing thorough visual inspection for cracks, tears, or grease ejection.

Question 4

A VW technician is performing a long-life (LongLife) service oil change. Which oil specification is mandatory for LongLife approval?

Accepted Answer

VW 504 00 / 507 00

Answer

VW LongLife service intervals require oils meeting VW 504 00 (gasoline) or VW 507 00 (diesel) specifications designed for extended drain intervals.

Question 5

When checking VW coolant concentration during a preventive service, what is the recommended antifreeze protection level for most US climates?

Accepted Answer

-35°F (-37°C) to -40°F (-40°C)

Answer

VW recommends a coolant concentration providing freeze protection to approximately -35°F to -40°F for adequate protection across US climate regions.

(VW) Volkswagen Certified Technicians Practice Test

(VW) Volkswagen Certified Technicians Practice Test

VW Preventive Maintenance Procedures 3