vehicle. Use only Biodiesel from high quality sources, certified by the BQ-9000 label at the fuel station and complying to ASTM D 7467 S15, B6 to B20. 
Using diesel fuel with concentrations of methyl ester biodiesel higher than 20 % (B20), such as B100 is still contrary to the terms of your Emission warranties or any other Volkswagen Limited Warranty and remains strictly prohibited. 
Biodiesel blends (up to B20) may be used in your vehicle; however, please be aware that biodiesel has characteristics that are different from other kinds of fuel, especially petroleum-based fuels. 
Biodiesel can attract water and also deteriorate with age. Small amounts of biodiesel can get into the engine oil, but unlike petroleum diesel, it does not evaporate over time. This can cause the oil level in the engine to rise and can affect the quality of the oil. 
 x Routinely check the engine oil level. A good time to do this is when you refuel, especially if you regularly do a lot of short distance or stop-and-go driving. This will help you see if the engine oil level is getting higher. (A rising oil level beyond the maximum indicator means an oil change is needed due 
to the dilution of the oil in the system; a potential characteristic of biodiesel use) ⇒  Engine oil. 
 x If you ever notice that the engine oil level has risen or is above the maximum indicator, contact your authorized Volkswagen dealer, authorized Volkswagen Service Facility or Volkswagen Customer CARE to schedule an oil change – regardless of the time or mileage that has elapsed since you last had an oil change performed. 
 x Continue to follow the oil change intervals found in the Warranty and Maintenance booklet that came with your vehicle, and use only engine oil that expressly complies with Volkswagen quality standard VW 507 00. 
 x Refuel only at trusted, commercial fueling stations that are located near main highways. These stations are more likely to have “fresh” biodiesel fuels that have not aged significantly. 
 x If your vehicle will be in storage (or not driven) for several weeks or months, please completely fill the fuel tank. If possible, fill the tank with Ultra Low Sulfur Diesel fuel [ASTM D-975 standard Grade No. 2-D (S15)]. 
If you have additional questions about your TDI® Clean Diesel vehicle, please call or write to us at: 
Volkswagen of America, Inc. 
Attn: Customer CARE 
3800 Hamlin Road, Auburn Hills, MI 48326 
Tel.: 1-800-444-8982 
  WARNING 
Starting fluids can explode and cause a run-away vehicle condition. 
 x Never use starting assist fluids.  
  NOTICE 
 x The vehicle's diesel engine was designed solely for use with ULSD fuel. For this reason, never use gasoline, heating oil, or other fuels that have not been expressly approved for use with the diesel engine. These fuels contain substances that will severely damage the fuel sys-tem and the engine. Such damage will not be covered by any Volkswagen Limited Warranty. 
 x If you put any amount of the incorrect fuel in the fuel tank, do not start the engine under any circumstances. Immediately contact the nearest authorized Volkswagen dealer or authorized Volkswagen Service Facility for assistance. 
 x If diesel fuel should get on any rubber hose, it must be wiped off immediately. The same applies if diesel fuel gets onto other parts of the vehicle, especially paint, tires, or a plastic part. Wash the contaminated vehicle parts right away with soap and warm water to help pre-vent leaks and serious damage.  
 
Vehicles with Keyless Access 
If the ignition will not start after reconnecting the vehicle battery, lock the vehicle from the outside and 
unlock it again ⇒  Unlocking or locking the vehicle with Keyless Access. Then try to start the ignition again. If the ignition cannot be switched on, contact an authorized Volkswagen dealer, an authorized Volkswagen Service Facility, or another qualified workshop for assistance. 
Automatic electrical load deactivation 
If the vehicle battery drain is high, the intelligent onboard electrical system management automatically takes steps to help prevent battery drain. 
 x The idle speed is increased so that the alternator provides more power. 
 x The power to devices that consume a lot of electricity is cut back or switched off completely. 
 x When the engine is started, the power supply to the 12 Volt sockets is temporarily interrupted. 
The onboard electrical system management cannot always keep the battery from being drained. For example, the battery will drain if the engine is not running, but the ignition is switched on or the parking lights are left on for a long time when parked. 
What drains the vehicle battery? 
 x Long periods when the engine is not running, especially when the ignition is on. 
 x Using electrical systems or devices when the engine is switched off. 
 x Leaving the vehicle unlocked for several days when not in use. 
 x The selector lever is left for a long period of time in any position other than Park (P) when the 
ignition is switched off ⇒  Automatic transmission: Selector lever. 
  WARNING 
Failure to use the proper battery with proper mounting and connections may cause short circuits, fires, and serious personal injuries. 
 x Always use only maintenance-free or cycle-free, leak-proof batteries with the same speci-fications and dimensions as the original equipment battery. Specifications are listed on the battery housing.  
  WARNING 
When the vehicle battery is charged, it produces highly explosive hydrogen gas. 
 x Charge vehicle batteries only in well-ventilated areas. 
 x Never charge a frozen or thawed battery. A dead battery can freeze at temperatures around +32 °F (0 °C). 
 x You must replace the vehicle battery if it was frozen. 
 x Incorrectly connected cables can cause a short-circuit. First connect the positive cable (+) and then the negative cable (-).  
  NOTICE 
 x Never disconnect the vehicle battery or connect 2 vehicle batteries to each other when the ignition is switched on or the engine is running. Doing this may damage the electrical system or electronic components. 
 x Never use a vehicle battery that does not meet the specifications for the vehicle battery for your vehicle. Using the wrong battery can damage the electrical system or electronic compo-nents and cause electrical malfunctions.