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Maintenance -> Brake fluid for Your Volkswagen Touran 4 Door Third Generation (2022-2025)

Introduction  
Brake fluid absorbs moisture from the air over the course of time. Too much water in the brake fluid causes damage  
to the brake system. Water lowers the boiling point of the brake fluid. If the water content in the brake fluid is too  
high, vapor lock may form in the brake system during heavy braking and full braking. Vapor lock reduces the braking  
efficiency, increases the braking distance considerably, and can lead to a total failure of the brake system. Your own  
safety and the safety of others on the road depends on your brake system functioning correctly at all times.  
WARNING  
Brake fluid is poisonous. Contact with brake fluid – in particular, if brake fluid is swallowed – may result in serious  
injury or death.  
If you swallow brake fluid, seek urgent medical help.  
If you have health problems after working with brake fluid, seek medical help.  
Always store brake fluid out of the reach of children and only within the sealed original container.  
Never use empty food cans, bottles, or other containers to store brake fluid, because someone could drink the  
brake fluid by mistake.  
Avoid regular contact with brake fluid to prevent damage to your skin.  
Protect your skin, face, and particularly your eyes when working with brake fluid.  
Do not eat, drink, or smoke when working with brake fluid.  
Wash your skin with soap and water after working with brake fluid.  
NOTICE  
Spilled or leaking brake fluid will damage the vehicle's surfaces. The vehicle's paint, plastic parts, and tires may be  
damaged.  
Immediately wipe up any spilled or leaking brake fluid that comes into contact with vehicle components.  
Then rinse all vehicle parts with plenty of water.  
Brake fluid can pollute the environment.  
Collect any leaking fluids and dispose of them according to legal and environmental  
regulations.  
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Brake fluid specifications  
Volkswagen has developed a special brake fluid that is optimized for the vehicle's brake system. For optimum  
performance of the brake system, Volkswagen recommends only using brake fluid that complies with the VW  
standard 501 14.  
Before using brake fluid, check that the brake fluid specification on the bottle matches the vehicle requirements.  
Brake fluid that complies with the VW standard 501 14 can be obtained from an authorized Volkswagen dealer or  
authorized Volkswagen Service Facility.  
If this type of brake fluid is not available and it is therefore necessary to use a different high-quality brake fluid  
instead, a brake fluid that meets the requirements of DIN  
ISO 4925 or the US standard FMVSS 116 DOT 4 CLASS 6 can be used.  
Not all brake fluids that comply with the requirements of DIN ISO 4925 or US Standard FMVSS 116 DOT 4 CLASS 6  
have the same chemical composition. Some of these brake fluids can contain chemicals that can destroy or damage  
components of the vehicle brake system over time.  
Brake fluid that complies with the VW standard 501 14 meets the requirements of DIN ISO 4925 or the US Standard  
FMVSS 116 DOT 4 CLASS 6.  
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Checking the Brake Fluid  
Preparations  
1. Safely park the vehicle on a horizontal and firm surface (→ Parking).  
2. Open the hood.  
Checking the Brake Fluid Level  
Fig. 1 In the hood space: Cap on the brake fluid reservoir.  
The brake fluid reservoir can be recognized by its cap→ fig. 1.  
The brake fluid level cannot be checked precisely on all models because the hood or engine components may obstruct  
the view of the fluid level in the reservoir.  
If you cannot read the brake fluid level clearly, see an authorized Volkswagen dealer or authorized Volkswagen  
Service Facility for assistance. Volkswagen recommends contacting an authorized Volkswagen dealer or authorized  
Volkswagen Service Facility.  
If the brake fluid level is not between the min. and max. marking on the brake fluid reservoir, Volkswagen  
recommends consulting an authorized Volkswagen dealer or authorized Volkswagen Service Facility for assistance  
.
The brake fluid level decreases slightly when the vehicle is being used as the brake pads wear and the brakes  
automatically adjust themselves.  
WARNING  
A low brake fluid level or unsuitable brake fluid may cause the brakes to fail or may reduce braking efficiency.  
Accidents and serious or fatal injuries could result.  
Have the brake system and brake fluid level checked regularly.  
Be sure to use the correct brake fluid.  
Only use brake fluid that expressly complies with the VW standard 501 14.  
Only use a high-quality brake fluid that complies withDIN  
ISO 4925 CLASS 6 or the US standardFMVSS 116 DOT 4 in the exceptional case that a brake fluid that conforms  
to VW standard 501 14 is not available.  
Changing brake fluid  
An authorized Volkswagen dealer or authorized Volkswagen Service Facility can provide information about the  
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interval for changing the vehicle brake fluid. Volkswagen recommends contacting an authorized Volkswagen dealer  
or authorized Volkswagen Service Facility.  
Have the brake fluid changed regularly.  
Only have brake fluid added that meets the required specifications.  
WARNING  
Vapor lock may occur in old brake fluid due to absorbed moisture during hard braking, reducing braking efficiency  
and potentially causing total brake failure. Accidents and serious or fatal injuries could result.  
Have the brake fluid changed regularly.  
Only have new brake fluid added.  
Troubleshooting  
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.  
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