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2009 SXT - Proportioning valve??

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Old 09-10-2011 | 10:06 AM
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Default 2009 SXT - Proportioning valve??

I have 47k +/- on my 2009 GC. at 29k I had to replace REAR pads only, fronts show hardly any wear. Now again at 47k rear pads have been replaced fronts still at 90%+. I called Chrysler, the very rude lady says the dealership finds nothing wrong with my brake pads. Duh. Pads are working, that's why they are worn out.

My question is: I believe my proportioning valve must not be working, or the bias is set backwards.... But, no way to check a valve and not willing to pay Dodge $1000. to change it out.

**No, it's not the way I drive; I am a woman, but I am also a semi-truck driver, I know how to drive, and even so, if it were the way I drive and the proprtioning valve were working correctly I would be replacing brake pads on BOTH axles...

Advice please?? I am not going to let Dodge get away with this one. They need to pay me for my brake replacements and to fix the valeve issue or bias... to prevent more brake pad replacements every 20k... but how can I check that system? I mean, it's a valve; only way to check it is to replace it with another, right?

Help; please??!

Thanks!
 
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Old 09-10-2011 | 10:53 AM
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OK, you got 30K out of the original set and 18K out of the second set....where did the second set of pads come from?
 
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Old 09-10-2011 | 10:56 AM
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Second set came from the dealership. I had them do the brake job because I already had a thought that something was not right and wanted an offical paper trail if it did show in the future (which is the case, I now know...).
 
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Old 09-10-2011 | 11:09 AM
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Originally Posted by mamervilemom
Second set came from the dealership. I had them do the brake job because I already had a thought that something was not right and wanted an offical paper trail if it did show in the future (which is the case, I now know...).
As far as the pads they used, I have no way of knowing. I'm guessing the Mopar V-Line. At 18K i'm thinking they would just go ahead an warranty them. That's how we would handle it. In the mean time here's some reading material that may clarify some things for you.
Pay particular attention to the last paragraph and the "partial mode" ESP. Or maybe just turn it OFF whenever the roads are good and use it in rain, snow, etc. This may help manage your brake wear. In the future I would advise ONLY premium brake pads on anything with ESP. I ran across a heck of a good brake video on youtube but I forgot to save it. I will search for it again.

ELECTRONIC STABILITY PROGRAM

The Electronic Stability Program (ESP) enhances control and stability of the vehicle under various driving conditions. ESP corrects for over/under steering of the vehicle by applying the brake of the appropriate wheel to assist in counteracting the over/under steer condition. Engine power may also be reduced to help the vehicle maintain the desired path. ESP uses sensors in the vehicle to determine the vehicle path intended by the driver and compares it to the actual path of the vehicle. When the actual path does not match the intended path, ESP applies the brake of the appropriate wheel to assist in counteracting the oversteer or understeer condition.






  • Oversteer - When the vehicle is turning more that appropriate for the steering wheel position.
  • Understeer - When the vehicle is turning less than appropriate for the steering wheel position.
The "ESP/TCS" indicator light located in the instrument cluster starts to flash as soon as the tires lose traction and the ESP system becomes active. The "ESP/TCS" indicator light also flashes when the TCS is active.


The ESP® default mode is Full-On with every key-on. Pressing the ESP Off button once activates what is referred to as Partial mode. In Partial mode, Traction Control is deactivated and ESP® operates at a higher threshold, therefore, it will not come on as aggressively as in the Full-On mode. The system can be returned to “normal” Full-On mode by pressing and releasing the ESP Off switch. The ESP function lamp is illuminated in the cluster whenever the ESP system is turned off.


BRAKE ASSIST SYSTEM

The Brake Assist System (BAS) is designed to optimize the vehicle's braking capability during emergency braking maneuvers. The system detects an emergency braking situation by sensing the rate and amount of brake application and then applies optimum pressure to the brakes. This can help reduce braking distances. The BAS complements the antilock brake system (ABS). Applying the brakes very quickly results in the best BAS assistance.


ELECTRONIC VARIABLE BRAKE PROPORTIONING

Electronic Variable Brake Proportioning (EVBP) is used to balance front-to-rear braking in place of a traditional rear proportioning valve. The EVBP system uses the ABS system to control the slip of the rear wheels in partial braking range. The braking force of the rear wheels is controlled electronically by using the inlet and outlet valves located in the integrated control unit (ICU).
EVBP activation is nearly invisible to the customer since there is no pump motor noise and minimal brake pedal feedback.
 

Last edited by TNtech; 09-10-2011 at 11:23 AM.
  #5  
Old 09-10-2011 | 11:24 AM
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Thank you. At least that gives me a different path than I knew of (my car experience is not with new vehicles) I will turn off the ESP, and hopefully in 20k we're not just in the same spot...


Is there any way to check the BAS or EVBP? Other than just plugging in and looking for codes?
 
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Old 09-10-2011 | 11:40 AM
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Originally Posted by mamervilemom
Thank you. At least that gives me a different path than I knew of (my car experience is not with new vehicles) I will turn off the ESP, and hopefully in 20k we're not just in the same spot...

Is there any way to check the BAS or EVBP? Other than just plugging in and looking for codes?
That's about it. The ABS module will monitor all of it and control solenoids and what-not. If it sees something out of range it will throw a code. I have yet to run into an internal issue with the ESP as it relates to the EVP but that doesn't rule out a possible problem with yours.

Yes, cars have changed a lot! The reason I asked you about the pads is that the second set they put on may have been crap material. The factory ones going at 30K is not that much of a surprise. I've seen some of the cheap ones from aftermarket go as little as 8K miles. There are alternatives that will laaaaaast, but they cost much more. I will tell you that I have never put a set of Mopar pads on my own car. I've always had good luck with the premium Bendix. Some people would advise going with ceramic, but there are BS versions of them too so you have to do your homework. Like a 50/50 composition, etc. Cheap Chinese rotors will also contribute to premature pad failure.
 
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Old 09-10-2011 | 03:31 PM
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Just picked up the van from the dealership. Of course, the service rep knew little about the quality or type of pad used, but the first time as well as this time they have used the "chrysler recomended" sets. I will be replacing them Bendix brand or Ceramic pads. At this point I just want to lengthen the life of them. I turned off the ESP as soon as I picked the van up. I'll do more periodic thickness checks and see if I can't figure it out...

Thanks for the help!
 
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Old 09-11-2011 | 09:53 AM
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YW, still though use the ESP when the driving conditions are poor. It is a good system.
 



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