Below is what I have documented for servicing - mostly just inspecting stuff which is pretty much covered by MOT inspection anyway:
Note - Air filter change every 6 years or 80,000 miles.
As Mr Sasquatch says, Brake fluid at 3 years,
Also brake pads may be getting a little low depending on how heavily used they are.
Service Checklist
Interim service
Wipers, washers and fluid level
Horn
Lights
Condition of the front and rear lamps
Instruments
Battery 'magic eye'
Coolant level and anti-freeze strength
Condition of visible drive belts
Brake fluid level
Power-assisted steering wheel
Saturation indicator on the air filter (if fitted)
Tyre condition, wear patterns and tread depths
Tyre pressures and correct them if necessary
Brake system for leaks and damage
Thickness of the front and rear brake pads/linings
Steering and suspension for wear and leaks
Drive shafts
Condition of the exhaust system
Change the engine oil and filter
Reset the service interval delay
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Full Service
Lights
Horn
Instruments
Washers and wipers and top-up fluid
Tyre condition and tread depths
Tyre pressures and correct them if needed
Airbags for visible damage
Sunroof
Tipper system and change the oil if necessary
Paint and bodywork for damage and corrosion
Expiry date on breakdown set
Engine and engine compartment for leaks
Condition of visible drive belts
Gearbox, final drive and rear axle for leaks and damage
Manual gearbox oil level
Final drive oil level
Brake system for leaks and damage
Thickness of the front and rear brake pads/linings
ABS sensor and cables
Underbody sealant and panels for damage
Supplementary rubber rings
Condition of the exhaust system
Steering joints and boot for wear and damage
Coolant levels and anti-freeze strength
Condition of the camshaft drive toothed belt
Power-assisted steering oil level
Brake fluid level and condition
ATF level (automatic)
Battery
Idle speed
Adjustment of headlights
Drive shaft
And we'll also:
Run a vehicle systems test and read fault memories
Grease the front door check-strap and hinges
Grease the trailer coupling
Change the engine oil and filter
Change the gearbox oil if necessary
Change rear axle oil if necessary
Renew the air filter
Renew the pollen filter
Renew the fuel filter
Perform engine basic settings
Perform a road test
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Most vans are set to Long-Life 18000mls/24mnths by the dealer.... But I've noticed if you play with the MFD it defaults back to 12000mls/12mnths (which I've done twice now....oops!)
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You can choose from two types of service regimes at VW Van Centre (Hatfield), depending on your driving methods. Your VW van also has the benefit of a service indicator on the dashboard to remind you of when a service is due.
Service Regime One: Fixed Service (Time and Distance) – the first of 12,000 miles or 12 months
Recommended if you drive less than 10,000 miles a year
You drive your van mainly in town centres / heavy traffic
You make frequent short journeys
You often use your van for towing or heavily laden
Your driving style involves hard acceleration and braking
Service Regime Two: Flexible Service (Long Life Service) – the first of 18,000 miles or 24 months
Recommended if you drive over 25 miles a day
You often use your van for long distance journeys
You rarely tow with your van or use it to its maximum load capacity
You adopt an economical driving style with minimal engine loading
Every 1 year / 10,000 miles
Engine oil and filter change
Comprehensive brake system inspection
Inspection of steering and suspension
Check and correct tire pressures and inspect tire condition
Wipers, washers, and fluid levels check
Horn and lighting systems check
Coolant level and antifreeze strength check
Battery and visible drive belts inspection
Exhaust system inspection
Run vehicle systems test and read fault memories
Other key services and inspections
Brake fluid: Every 2 years
Pollen (cabin air) filter: Every 2 years / 40,000 miles
Air filter: Every 6 years / 80,000 miles
Fuel filter: Every 80,000 miles
Timing belt: At approximately 130,000 miles or every five years
DSG automatic gearbox oil and filter (if applicable): Every 40,000 miles or 4 years
Tire rotation: Schedule with regular services
Brake pads and discs: Inspect thickness and condition
Greasing: Front door check-strap, hinges, and trailer coupling