VW Passat & Audi A4 1990-2000

Brake Master Cylinder

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FLUID RECOMMENDATIONS

On all models covered by this guide, brake fluid that meets or exceeds DOT 4 specifications should be used in the brake system. DO NOT use DOT 5 fluid; the hydraulic system can be damaged.

LEVEL CHECK


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Fig. Master cylinder level marks



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Fig. Wipe around the cap of the master cylinder to remove any dirt



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Fig. Remove the cap



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Fig. Add brake fluid that meets the DOT 4 specifications



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Fig. The fluid reservoir is translucent and the level easily checked

The brake fluid reservoir is located on the left side of the engine compartment at the firewall. Fluid level can be checked visually without removing the cap on this translucent unit. Brake fluid level will decrease slowly as the brake pads wear thinner. If the level is close to the MIN line, check the brake pads and/or shoes for wear before adding brake fluid.


NOTE
Some models do have a brake fluid level warning light. As the fluid level reaches the MIN (minimum level) the light may flash when driven over bumps or around corners. Check the brake lining thickness and top off as necessary.

If the reservoir constantly needs refilling, chances are there is a leak in the system. The entire brake system should be thoroughly inspected for any signs of leakage.

 
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