2002 VW Passat Metal Brake Noise

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ACETHOM
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I have a 2002 VW Passat wagon 1.8T w. 54000 miles
I heard metal to metal yesterday when I applied brakes but it only was in the left rear. should I only have both the rear brakes done and should the rotors be turned ?
Jan 21, 2007 at 3:35 AM
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BRUCE HUNT
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When ever you have brakes done, they should and need to be done in pairs. ie both back or both front. Now, the need for the rotor to be turned is one you have to think about. Taking it to a shop for that to be done will work but they will measure for the thickness of the rotor and tell you if they can safely turn it. Thinking back about this I have always thought it seemed silly to replace the rotor when it was so close to passing the minimum safety level. BUT, the pressure is great that is applied and the heat is substantial. If in doubt at all, replace the rotor. The new rotor will eliminate the grab-release-grab feeling that occurs when a warped rotor is braking. Often, even a newly turned rotor will still be warped. Now you have mentioned that the metal on metal sound is being heard. This is a serious state and I am thinking that you might be in replacement mode already. Good luck with the brakes. DONE IN PAIRS. ALWAYS.......
Jan 21, 2007 at 8:37 AM

Suggested Repair

Service both rear brakes as a pair. Have the rotors measured for minimum thickness; if they are close to the limit or there is any doubt, replace them rather than turn them. Metal-to-metal noise indicates a serious condition and likely means the pads are already worn through.

Conversation Summary

The owner of a 2002 VW Passat wagon heard metal-to-metal noise only at the left rear when braking and asked whether only the rear brakes should be serviced and whether the rotors should be turned. The expert said brakes must always be done in pairs, rotors should be measured for safe thickness, and doubtful rotors should be replaced because turned rotors can remain warped. Metal-to-metal contact was described as serious and likely already requiring replacement.

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