pulsing brakes on 09' Cayenne
 

Hi,
I have been experiencing pulsing brakes on my 09' Cayenne. I have an idea what it could be but wanted to ask people here their opinion before I tear into it.

A Toyota tech told my son that his pulsing on his 4runner was due to the emergency brake being suck (stuck in a position; either on or off) therefore when he applies his brake, the front brakes have to work overtime to off set the non-properly working rear brakes.

That made some sense so instead of paying Toyota for a complete re-build of the bell crank, I sprayed some rust break free stuff on it, yanked hard a few times on the cable and it pretty reliably fixed his pulsing.

Now for my car, it does the same thing I think but I wanted to ask you all here what you thought. I have never taken the brakes off or anything like that so I'm not super highly skilled and theres no way i want break my Porsche.

Is there a similar part/cable/setup like the bell crank on the 4runner? I haven't really seen much on the web about that and I don't want to just yank of any old thing on the underside.

Thanks to all!

Hi David - hopefully the link below will help you troubleshoot and resolve the brake issue. If you need any further assistance, post a comment just below an article and someone will get back to you with more details. Best of luck! :)


Porsche Cayenne Brakes Tech Articles


-Dmitry

Generally speaking, pulsing brakes means warped rotors.

Yes, Aurel brings up a very good point. Definitely check the rotors.


-Dmitry

One thing about Cayennes is that they go through brakes rotors and tires like crazy. My Cayenne begins to pulse as stated above when the rotors become warped after a while so I just replace all of the pads and rotors and it goes away until they warp again. My car is an 04 with 170K miles on it so I have been through quite a few sets over the years. One thing I discovered is that a quality set of aftermarket brakes and rotors last about the same amount of time as factory parts but cost half as much. Very easy brake job to do

OEM Brembo rotors and Pagid pads for my 09 CS around $500 vs the EXACT SAME parts but with the Porsche logo for well over $1k US.


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wish I could use the cheap ones... but I have the 380mm versions... $1000 a rotor.

Ouch! $4k for the 4 wheels? Maybe worth checking first if they can be resurfaced.

The fronts are the spendy ones... and no, no resurfacing.
There is only 2mm of usable width allowed between new and out of spec.
So one set of pads, and you are likely done.

When you add all the replacement sensors, pads, etc.... all 4 corners would be close to $3100.

On a car with an MSRP of $140K, it's in proportion... but ouch none the less.