The brake fluid level decreases slightly when the vehicle is being used as the brake pads wear and the brakes automatically adjust themselves.
Changing brake fluid
Have the brake fluid changed regularly. An authorized Volkswagen dealer or authorized Volkswagen Service Facility can provide information about the interval for
changing the vehicle brake fluid. Only have brake fluid added that meets the required specifications. Volkswagen recommends contacting an authorized
Volkswagen dealer or authorized Volkswagen Service Facility.
WARNING
Low brake fluid, brake fluid that is too old, or using an incorrect type of brake fluid can cause brake malfunctions or reduced braking efficiency. Hard braking
when the brake fluid is old can cause vapor lock to form in the fluid due to absorbed moisture. Vapor lock reduces the braking efficiency, increases the braking
distance considerably, and can lead to a total failure of the brake system.
Have the brake system and brake fluid level checked or have the brake fluid changed regularly.
Only have new brake fluid added.
Be sure to use the correct brake fluid. Only use brake fluid that expressly complies with the VW standard 501 14. Any other brake fluid or brake fluid that
is not high-quality can impair the braking function and reduce the braking efficiency.
If brake fluid that complies with the VW standard 501 14 is not available and it is absolutely necessary to use a different brake fluid, only use a high-
quality brake fluid that complies with DIN ISO 4925 CLASS 6 or US standard FMVSS 116 DOT 4.
Troubleshooting
Please read the introductory information and heed the Warnings and Notice ⇒
Safety precautions for working in the engine compartment .
Brake fluid level
The red warning light turns on. The brake fluid level is too low.
Do not continue driving! This could result in the brake failing.
1. Stop the vehicle immediately as soon as it is safe to do so ⇒ Parking.
2. Check the brake fluid level.
3. If the brake fluid level is too low, contact an authorized Volkswagen dealer or authorized Volkswagen Service Facility.
12 V vehicle battery
Introduction
The 12-volt vehicle battery is a component of the electrical system and serves to supply energy to the vehicle. During maintenance procedures, the 12 V vehicle
battery is checked and replaced if necessary.
You may only perform procedures on the electrical system yourself if you are familiar with the necessary activities and the general safety precautions, and if the
correct operating equipment and fluids and suitable tools are available. Work performed incorrectly can result in serious injuries ⇒
. Have all work performed by
suitably qualified professionals. Volkswagen recommends contacting an authorized Volkswagen dealer or authorized Volkswagen Service Facility.
Information about warning and indicator lights can be found in the troubleshooting section at the end of the chapter ⇒ Troubleshooting.
Battery switch-off in an accident with triggering of the airbag
In vehicles with a 12 V vehicle battery in their vehicle interior or luggage compartment, the electrical connection to the 12 V vehicle battery is pyrotechnically
disconnected in an accident with airbag deployment. This prevents a short circuit. For more information on the installation location of the vehicle battery, refer to
section → page , Checking the 12 V vehicle battery acid level .
Detailed warnings for the 12 V vehicle battery
Always wear eye protection.
are forbidden. A highly explosive mixture of gases forms when charging the 12 V vehicle battery.
V vehicle battery. Always heed the Owner's Manual.
Battery acid is highly corrosive. Always wear protective gloves and eye protection.
Fire, sparks, open flame, and smoking
Always keep children away from battery acid and the 12
WARNING
Performing work on the 12 V vehicle battery and the electrical system can cause serious injuries, fires, or electric shocks.
Always read and observe the following warnings and safety precautions.
Before performing any work on the 12 V vehicle battery, switch off the ignition and all electrical equipment and disconnect the 12 V battery negative
cable.
Always keep children away from battery electrolyte and the 12 V vehicle battery.
Always wear eye protection and safety gloves.
When handling 12 V vehicle batteries, always protect your hands, arms, and face from spraying battery acid.
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