2008 Prius needs brake actuator replaced, dealership says it's not covered

Ok, so this is my first post. Here's what's going on...

I have a 2008 Toyota Prius with 48k miles on it. Low miles, never had any problems.

I was on my way home, with <3 miles to go, and 4 warning lights all popped on at once: 1) The red BRAKE, warning light; 2) The yellow (!), Electronically Controlled Brake Warning light; 3) The yellow ABS, Anti-Lock Brake System light; and 4) The yellow VSC, Vehicle Stability Control light. I didn't drive it for 4 days and then checked again to find all the lights still on, so I had it towed to the nearest dealership...83 miles away.

The dealership runs a diagnostic and says there's no pressure to R rear wheel cylinder and they traced it back to an internal leak in the Brake Actuator. Knowing about the ZG1 Warranty Enhancement (which covers the Brake Actuator Assembly) I say that it should be covered and he proceeds to tell me it's not. I continue asking questions and eventually he says he will need to get back to me. He calls back the following day and he says that he too thought it should be covered, but it's not. Over the course of 4 more conversations I finally can make some sense of why, and found out that in order for the Brake Actuator to be covered by the warranty they need to see 1 or more of the following DTC codes: C1391-Accumulator Leak Malunction, C1252-Brake Booster Pump Motor On Time Abnormally Long, C1253-Pump Motor Relay Function, C1256-Accumulator Low Pressure. My issues only read C1364 and C1342 (Wheel Cylinder Pressure Sensor Malfunction and Front Hydraulic System LH Malfunction).

I was then quoted at $3000 to replace the brake actuator after taxes.

Ok, hopefully it is all making sense up until now. My question is, doesn't it seem silly that they can't replace a part with a known issue that's under an Enhanced Warranty because they don't see the correct DTC codes? By their own admission they traced the issue back to an internal leak in the brake actuator! Anybody know a workaround? I feel like I'm being screwed and I really don't want to pay to replace a part that's supposed to be under warranty.

Also, I asked if it would make sense to run the diagnostics again and he said no, but maybe after driving 100 miles or so. So, I'm also wondering if because I drove <3 miles since the warning lights came on, maybe there hasn't been enough time to trigger the other warning messages. Any thoughts on driving it around (slowly and safely) and trying again? Maybe taking it to another dealership?

 

Thanks, I'm planning to call Toyota corporate but won't be able to until next week because I will be working in an area without cell coverage.

 

You guys have a 24 hour number? The number I have is for the Toyota Customer Experience Center 1 (888) 270-9371, which operates only certain hours. I can probably reach them early in the morning before I head out of range.

 

***Update***
Just got off the phone with the Toyota Customer Experience Center and they said that if the dealership found fault with the Brake Actuator, then there doesn't need to be any special diagnostic code and that the Brake Actuator is covered by the warranty. They're going to contact the dealership's Customer Relations Manager (who is higher than my contact in the service center), and notify them for me of the warranty terms and I should have a response within 2 business days. Keeping my fingers crossed that this goes smoothly, but now I don't even feel like I can even trust them, you know? Why is it that this kind of behavior is acceptable? I've heard stories like this before, but this is the first time I've experienced anything. Thanks for the help!