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2007 Kia Sportage LX
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Discussion Starter #1 (Edited)
Hello, I have an 07 Kia Sportage. with approximately 130,000 miles. I recently had an issue with the left rear caliper, brakes and pads. I towed it to what I considered a reputable shop (with locations nationwide that I have dealt with for years) and they replaced the one caliper on the drivers side back, and pads and rotors on both sides on the back.

18 days later the same thing happened again (the same wheel locked up) and with it the right front caliper locked up as well. I towed it back to the same shop where they notified me that they had missed that the left rear brake line was clogged (sort of thing one should catch after doing a rotor, caliper, and pad replacement on the left rear in my opinion). So they were willing to replace the caliper on the left rear and fix the brake line free of charge. They insisted I would have to pay to replace the right front caliper as they claim it being frozen has nothing to do with the left rear caliper being frozen.

It seems very unlikely that two calipers on opposite sides would fail within 20 days of each other and be unrelated. I am no expert, but I believe that the master cylinder usually controls brakes that way. So that the front passenger uses the same fluid as the back drivers, and the front drivers uses the same fluid as the back passenger. Based on the calipers that failed being where they are, I believe the front failure is likely caused by whatever caused the back caliper to fail - and with 3 total caliper failures in under 20 days (on only 2 wheels), I am very concerned about this. They claim it cannot be the master cylinder or anything but the brake line failure that caused the back caliper to fail twice. They claim age is what caused the front caliper to fail, and that it is in no way related to the back caliper failing twice.

I was told the master cylinder is working because when the clogged line is removed from the system, fluid comes out of the end of the lines, and that this is all a master cylinder does.

I have been driving cars for 25+ years and have never had one caliper fail, let alone two at once, and three inside of a month seems absurd. I am therefore very skeptical to continue throwing money (approximately $1000 per caliper) at repairs for something I believe the shop should have caught when they did the first repair. I feel like the front caliper issue was caused by the back caliper issue - and that both are caused by some (likely) undiagnosed problem. This makes me concerned that I will be driving an unsafe vehicle if I let them do the repair. No one else is going to replace a caliper for free however, and I do not have multiple thousands to throw at this problem.

The shop claimed that KIA uses a different master cylinder configuration, and the brakes in question are in no way related. Then they went on to explain that they did not know for sure how the master cylinder in a KIA operates.

Does anyone know enough about brakes to help me understand if this is going to solve the issue, or if it is just going to cascade in another 2 weeks into another caliper failure?
 

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2007 Kia Sportage LX
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3 Posts
Discussion Starter #2
UPDATE: Spoke with the store manager today and they are replacing the calipers and brake line. He said they are not equipped to figure out what is causing the calipers to fail and that I should get it checked out at a dealership. I am hoping to avoid the insane dealer bill, Is there a common set of troubleshooting steps etc... I should check?
 

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Super Moderator
99 Kia Elan 1.8L
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11,609 Posts
I suspect, cant be sure, but it could be the lack of skills and equipment at the shop you've been using and possibly something like not using the correct procedure for bleeding the ABS system.
 
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2007 Kia Sportage LX
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3 Posts
Discussion Starter #4
So the shop found codes for the ABS Pump and claim it can cause the Calipers to seize.
 

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Super Moderator
99 Kia Elan 1.8L
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11,609 Posts
So the shop found codes for the ABS Pump and claim it can cause the Calipers to seize.
You're best positioned to know whether you can trust that shop, but from what you've described so far I wouldn't.
 
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