Help diagnosing error codes and mysterious (oil?) leak

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Joined
Nov 10, 2024
Threads
3
Messages
16
Location
Birmingham, Alabama
Hello everyone,

While leaving to go get the oil changed in my 2013 LC200 I noticed a small pool of what seemed to be oil in front of the front passenger side tire (see photo). There was no oil leak that I could see from anywhere on the engine (looked at heads and oil pan, all bone dry). Upon further inspection there seemed to be oil on the lower half of the brake caliper and the underside of the LCA that had been slinging fluid of some type around the wheel well. The brake line going into the caliper itself was bone dry and the fluid on the ground doesn't look like brake fluid to my eye.
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I have noticed no issues while driving that seem to point to any braking or power-steering issue. It drives perfectly normal. The only thing I can think of at the moment is perhaps hydraulic fluid from the KDSS? But this wouldn't explain why there is an oily substance that seems to be originating from the brake caliper and LCA bushing.

There were no discernible issues until I drove approx. 2hrs back home and started the car up again the next day. The dash lit up with PCS, ABS, and Traction control lights, along with the light that said my E-brake was engaged (it was not). I'll pull the codes tomorrow and I plan on taking it to a shop soon due to the actual leak I noticed. But does anybody have any ideas as to what might be going on? I had pads and rotors replaced on all 4 corners about 7-8 months ago.
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Here is the photo of the dash as of right now. Also, update: I just hooked up my OBD2 scanner but somehow I could not pull a single code no matter how many times I tried. The dash was still lit up like a Christmas tree. The brake fluid was at its minimum level, so I refilled that and I suppose I will see what happens tomorrow and gauge if the leak is the brake fluid or something else.

This seems to be a niche issue but if anybody has any ideas I would greatly appreciate it!
 
Have you checked your brake fluid level? Being low will cause a christmas tree like that.. and the fluid at the front passenger corner could be leaking from one of the four piston seals within the caliper, vs coming from the line itself.
 
So far, everything points to a leaking caliper. Fluids can look different after they’ve leaked and are on the floor. Basic OBD code readers are biased toward emission issues and I don’t see a check engine light on which may be why you can’t read a code. I think you’re in for a new caliper. It is an odd problem, but a seal like @bloc mentioned could have been damaged during the brake job and finally gave out.
 
Have you checked your brake fluid level? Being low will cause a christmas tree like that.. and the fluid at the front passenger corner could be leaking from one of the four piston seals within the caliper, vs coming from the line itself.
Good prediction! After refilling brake fluid yesterday, all of the warning lights (save TPMS) disappeared. I think you're correct. It's likely a bad piston seal on that brake caliper, not so bad as far as issues go. I'll take it to the shop sometime this weekend, hopefully that's all that's wrong with it!
 
Good prediction! After refilling brake fluid yesterday, all of the warning lights (save TPMS) disappeared. I think you're correct. It's likely a bad piston seal on that brake caliper, not so bad as far as issues go. I'll take it to the shop sometime this weekend, hopefully that's all that's wrong with it!
Technically if they aren’t corroded the calipers can often be rebuilt but very few places will do that. If they put a caliper on it insist on Genuine Toyota.. I recall some people having issues with aftermarket. And GT can be ordered relatively cheaply online.
 
Technically if they aren’t corroded the calipers can often be rebuilt but very few places will do that. If they put a caliper on it insist on Genuine Toyota.. I recall some people having issues with aftermarket. And GT can be ordered relatively cheaply online.
Appreciate the info! Looking up prices a single new brake caliper should only be about ~$150.00 for the part from Toyota (assuming they aren't sold in pairs), so I'll probably just go ahead and get it replaced in that case. No need to mess with OEM specs at this juncture as I don't have any issues with standard braking power. Also given the mileage, and the fact I have only owned this LC for a little over a year I'd rather just get a new one given I have no idea how old they really are.

Thanks for all the help!
 
Appreciate the info! Looking up prices a single new brake caliper should only be about ~$150.00 for the part from Toyota (assuming they aren't sold in pairs), so I'll probably just go ahead and get it replaced in that case. No need to mess with OEM specs at this juncture as I don't have any issues with standard braking power. Also given the mileage, and the fact I have only owned this LC for a little over a year I'd rather just get a new one given I have no idea how old they really are.

Thanks for all the help!
Priced individually. When you order the new caliper, you may want to go ahead and order a "Front Disc Brake Cylinder Kit". (don't know the part # for your model year LC). I suspect your seals are worn out and not the pistons. Install the new caliper, take the old caliper and replace the seals for about $30 with that OEM kit. Easy job and you have a backup caliper or save the cylinder/seal kit for future use on the other front caliper if it goes out.
 
Priced individually. When you order the new caliper, you may want to go ahead and order a "Front Disc Brake Cylinder Kit". (don't know the part # for your model year LC). I suspect your seals are worn out and not the pistons. Install the new caliper, take the old caliper and replace the seals for about $30 with that OEM kit. Easy job and you have a backup caliper or save the cylinder/seal kit for future use on the other front caliper if it goes out.
Took it to the mechanic, Indeed the front right brake caliper piston seals were leaking out brake fluid. Had both sets of calipers and front brake pads replaced with OEM parts and the brake lines flushed, it now brakes much smoother (and of course no longer leaks brake fluid all over the wheel). Unfortunately I just now saw your post, so no back-up caliper for me! Price wasn't bad at all compared to my previous vehicle (which was European).
Thanks for all the help!
 
Unfortunately I just now saw your post, so no back-up caliper for me!
Failed calipers are actually pretty rare on this platform outside of rust states, so your odds of ever needing it are quite low.

Glad you got it sorted!
 
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