Master Brake Cylinder Failure

Did you really get both? How do the MPG compare. I was also torn between them, each had good and bad points, but I found a 10 mpg hit for the Insight2 , so got the Prius.

 

Yes, I did get both!

The Insight is running at about 43 mpg vs. my 50 mpg (60/40 split, hwy/city).

The Prius is better when it comes to mpg, not to mention interior gadgets and design.

HOWEVER, the insight navigation and user interface is phenomenal, not to mention everything is voice activated/changeable.

I would love to take that out of the Insight and put it in the Prius, I would never buy another car!

 

That's what I thought too. I liked the instrumentation (eye candy) of the Insight, the tighter handling, the simpler design and thus cost of repairs, the smaller size, etc. But it could not come close to the MPG. The Prius comes out about halfway between my old Insight 1 and the new Insight 2. My 2010 Prius is running 60 mpg the old Insight ran 66 or so and the new Insight ran 54 , over the same mixed driving course. The Engineering in the Prius is amazing and accounts for the great MPG in a much heavier car (3,000#), than either the Insight 2 (2,600#) or the Insight 1 (1,800#).

 

Excellent advice, with a caveat ... not all GAP policies are created equal.

If you bought or leased your Prius under normal circumstances, GAP insurance from Toyota Financial or most insurance companies is sufficient.

However, if you owned more on your trade-in than it was worth, and you had the negative equity rolled into the cost of the car (and hence the sales or lease price), a number of insurance company GAP coverages do not cover the negative equity. You're left still paying for any gap between the trade-in's value and amount owed on it.

Toyota Financial's GAP insurance does cover negative equity from a trade-in, as I'm told a few insurance companies do as well. Sure is a trap for the unwary.

 

This weekend I had a total brake failure on my genIII with 25K miles. I lost all braking power and regen braking also. The Brake light , ABS light and Traction control lights all were lit. No accident because I used the emergency brake to get it stopped. The dealer said that the master brake cylinder went out.

 

No .... None.

REV

 

Glad you are OK, that could have been a wreck. Foot operated parking brake is a poor emergency brake.

Did you get a loaner car and will they let you keep it until they get yours fixed?

 

I did get a loaner (2010 Camry) to keep untill the repairs are done. The Camry needs more headroom.

 

Toyota really needs to do a recall on the 2010 for master cylinder problems. My car has had an intermittent squeaking from brake pedal. Today warning lights and no brakes. I am sure it is tr master cylinder and will be very costly since it is no longer under warranty. I am extremely frustrated. Toyota has a history of master cylinder problems.

 

Sorry about your brake problem, unfortunately from what I have read it may well be a master cylinder. Why don't you contact a good Toyota dealer (if you can find one) and try to get them to diagnose the problem instead of waiting for a total brake failure. Maybe they can contact Toyota and try to get them to pay for the replacement or at least pay part of the cost. If it is a master cylinder be sure to file a report with the NHTSA.

I agree, Toyota should step up to the plate on this. This is a good time for them to be proactive and issue a recall before a brake failure causes a serious problem for someone.

 

Just Had car at dealer and they said all brakes needed replaced. Said I lost brake fluid because pads were so worn. They bled brakes and cleared codes. I asked about master cylinder and they said they checked it and it's fine. Wh I picked up car, I still had chirping pedal and it felt soft. The next time I starter it up, all the dash lights were on again and now pumping brakes for power. I called and they said maybe tech was rushed when bleeding brakes. So now it's back at Toyota of Boardman Ohio again. I wiki report back when they call. Curious if anyone has had any luck getting Toyota or their dealership to foot any of the cost??? I still think its the master cylinder and just a coincidence that I needed a full brake job (at 144,000 miles. My first one.)

 

Just for information purposes the 2010 Prius Parts Catalog lists the above referenced part below:

Booster/Master Cylinder, Brake 2.6
47050-47060
$2,148.53

The 2.6 at the end is typically listed as the expected repair/replace labor hours.

 

I guess that your brake fluid could go down a slight bit due to the caliper pistons being extended a bit more with worn brakes. However, I can't believe that would be a major cause of brake fluid loss. Is the brake fluid level continuing to drop after the repair?

 

It's back at the shop. I didn't even look at fluid level. I had it home for an hour today before problems resumed.

 

I did some research and the the part you mentioned, 4705047060, and related part # 4705047070 were discontinued by Toyota. Sounds like 4705047140/4705047150 are the replacements. Also, looks like 2011+ has # 4705047180/4705047190 installed. Makes you wonder why all the part changes?

 

That is interesting with all of the part number changes. Sounds like Toyota is trying to replace known problem components.

The part number that I looked up came from the OP from his service report after repair.

 

Brake failures should be reported to the NHTSA to see if there's a pattern forming.

 

+1, this may be the only way to force Toyota into a recall and compensating 2010 owners who've had master cylinder failures.

BTW, my recently-replaced brake master cylinder was $2700 for the part alone. Just incredibly over-priced.

 

I ended up With a 4700 bill for booster and master cylinder. I'm glad there is a recall. We will see how many hoops I have to jump thru to get my money. I think i am done with Toyota. Sad because I do love my 2 priuses.

 

I also have master cylinder failure with my 2010 @ 95k freeway miles. This is after ABS accumulator recall fix when the brake failed for same symptoms 5 months ago. For some reason there was no code indicating master cylinder failure at that time and now the code points to master cylinder failure. My car is in the shop for a week now while Toyota saying it'll cover under the recall to fix it initially but now saying it is not. I really should have sold it after the first recall fix like my wife said "It's not safe anymore". Hopefully, Toyota comes to senses and fix it with updated parts as I like the car and rather not take a huge hit selling it.