Was doing some investigation on the potential sources of the brake judder/pulsation I'm getting with our CX-5 and found this R052/16C TSB. Unfortunately our VIN is of the effected cars. We are the second owner and the Carfax history does show some maintenance with the rear brakes a few times but nothing that explicitly states "replaced rear calipers". For example in 2020 it was serviced and the description lists:
- Brake fluid flushed/changed
- rear brakes replaced
- front brakes replaced
- brake pads replaced
- brake rotor(s) replaced
I'm guessing the "rear brakes replaced / front brakes replaced" is just reiterating what is described below it, but maybe I'm wrong and that means the calipers were replaced. The reason I bring this up is the TSB specifically states that rear calipers with lot numbers above "697" are modified and considered okay.
Now the rear driver side caliper has a LOT number of what looks like "985" but could very well be "885" or "835" or "935". The number's are also flipped/inversed so that you have to essentially read them upside down from looking outside in. Regardless, any of these combinations seems to be of the modified lots. What's interesting is the first two numbers are much smaller and closer together than the "5".
But on the rear passenger side caliper, the numbers are orientated what looks like normally and are not flipped. If you look at them how you would normally it would be "189". But the "8" has a bigger circle on the top suggesting it might be upside down. I'm curious which way is the proper way to read it and if numbers were flipped indiscriminately. The "1" has a base unlike the font on this forum shows. So if you flipped it, it would look like a "T". I'm thinking it might actually be "681" for that caliper and the "6" and "8" were printed normally (well inversed like the driver side caliper) while the "1" was accidently flipped (orientated normally).
This is peculiar because the driver side caliper looks like its of the modified calipers, but there is no previous history stating it was replaced. My vin says the car was manufactured in August of 2016 which is within the September 2016 Vin limit for defective rear calipers. I'll be taking the wheels off soon and checking for brake drag in the rear once I get one of those jacking point pinch weld adapters for my floor jack. I'll take pictures then of the LOT numbers for both sides.
Also as a side not, how accurate is the age old "if you feel shaking/judder in the pedal its the rear brakes; if you feel shaking/judder in the steering wheel its the front brakes"?
- Brake fluid flushed/changed
- rear brakes replaced
- front brakes replaced
- brake pads replaced
- brake rotor(s) replaced
I'm guessing the "rear brakes replaced / front brakes replaced" is just reiterating what is described below it, but maybe I'm wrong and that means the calipers were replaced. The reason I bring this up is the TSB specifically states that rear calipers with lot numbers above "697" are modified and considered okay.
Now the rear driver side caliper has a LOT number of what looks like "985" but could very well be "885" or "835" or "935". The number's are also flipped/inversed so that you have to essentially read them upside down from looking outside in. Regardless, any of these combinations seems to be of the modified lots. What's interesting is the first two numbers are much smaller and closer together than the "5".
But on the rear passenger side caliper, the numbers are orientated what looks like normally and are not flipped. If you look at them how you would normally it would be "189". But the "8" has a bigger circle on the top suggesting it might be upside down. I'm curious which way is the proper way to read it and if numbers were flipped indiscriminately. The "1" has a base unlike the font on this forum shows. So if you flipped it, it would look like a "T". I'm thinking it might actually be "681" for that caliper and the "6" and "8" were printed normally (well inversed like the driver side caliper) while the "1" was accidently flipped (orientated normally).
This is peculiar because the driver side caliper looks like its of the modified calipers, but there is no previous history stating it was replaced. My vin says the car was manufactured in August of 2016 which is within the September 2016 Vin limit for defective rear calipers. I'll be taking the wheels off soon and checking for brake drag in the rear once I get one of those jacking point pinch weld adapters for my floor jack. I'll take pictures then of the LOT numbers for both sides.
Also as a side not, how accurate is the age old "if you feel shaking/judder in the pedal its the rear brakes; if you feel shaking/judder in the steering wheel its the front brakes"?
