zeebomockingbird
Posts: 2
Joined: Mon Jan 04, 2016 2:20 pm
Delivery Date: 08 Jan 2011
Leaf Number: 000205

Leaking master brake cylinder, 2011 Nissan LEAF

Mon Jan 04, 2016 3:22 pm

(This is my first post to mynissanleaf.com. Apologies if this is not the right category.)

I took my 2011 LEAF to the dealer today because it was both time for the annual servicing and also because it had some worrisome lights related to the traction control and brakes. During their assessment of the vehicle, they found the brake master cylinder was leaking and told me it would need to be replaced at a cost of $2700, or about 28% of my car's resale value.

My LEAF is just about to hit its 5 year birthday (I got it on January 8th, 2011), has under 28,000 miles on it, and I've taken it in every year for standard servicing at a Nissan dealer.

Have others had problems with their brake master cylinder, or did I just get the one faulty brake master cylinder? I figure if I'm hitting this at 28K miles, others with more miles must have hit this sooner, but I haven't found evidence of this on the forums or Google searches.

(I'm feeling particularly frustrated because it's feeling like all the promises from Nissan about low cost of maintenance and 100 mile range were all misleading. I'm spending more now on maintenance of my brand new LEAF than I have on any used car I've owned in the past, and after 5 years, I'm lucky if I can go 60-65 miles on a full charge. On my normal commute, I can only squeeze out about 40-50 miles on a full charge.)

Thanks for any thoughts / responses / suggestions. Really thinking about selling my LEAF at this point and leasing an EV from another company.

Tim

Valdemar
Posts: 2632
Joined: Tue May 10, 2011 10:32 pm
Delivery Date: 09 Sep 2011
Location: Oak Park, CA

Re: Leaking master brake cylinder, 2011 Nissan LEAF

Mon Jan 04, 2016 4:13 pm

Sounds about right (in dealership prices) if it is the brake booster assembly. Ouch. I should probably start thinking about selling my Leaf :cry:
'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
-0CB(66.14AHr)@87.5k/54mo (BBB), -1CB(53.92Ahr)@140k/29mo,
51.1AHr, SOH 80%, 150k miles

9kW Solar

TLeaf
Forum Supporter
Posts: 247
Joined: Sat Aug 07, 2010 12:08 am
Delivery Date: 15 Jan 2011
Leaf Number: 000225
Location: Renton, WA

Re: Leaking master brake cylinder, 2011 Nissan LEAF

Mon Jan 04, 2016 4:30 pm

No such problem on my 2011 w/ 42K miles. Mine is going in for its service appointment this Friday and I've been wondering if I should get the brake fluid swapped out or not. I'm thinking I will this time (for the first time in 5 years), but maybe I shouldn't since I wouldn't want them to mess up something that's been working perfectly.

Valdemar
Posts: 2632
Joined: Tue May 10, 2011 10:32 pm
Delivery Date: 09 Sep 2011
Location: Oak Park, CA

Re: Leaking master brake cylinder, 2011 Nissan LEAF

Mon Jan 04, 2016 4:36 pm

Brake fluid needs to be changed regularly. Over time it absorbs water from the air which affects its properties and can also cause corrosion and damage of the brake system components. Which reminds me I'm overdue for a replacement myself...
'11 SL, totaled
-1CB@33k/21mo, -2CB@53k/33mo, -3CB@68k/41mo, -4CB(41.5AHr)@79k/49mo, -5CB(38.85AHr)@87.5k/54mo
-0CB(66.14AHr)@87.5k/54mo (BBB), -1CB(53.92Ahr)@140k/29mo,
51.1AHr, SOH 80%, 150k miles

9kW Solar

lkkms2
Gold Member
Posts: 343
Joined: Wed Jul 20, 2011 8:10 am
Delivery Date: 30 Dec 2016
Leaf Number: 302025
Location: San Diego/National City, CA

Re: Leaking master brake cylinder, 2011 Nissan LEAF

Tue Jan 05, 2016 2:56 am

On my 2011 I had my brake fluid changed after two years at the same time they did a fix (software change) to reduce the jerkiness when stopping at slow speed. Been working fine ever since.

Did you feel any strange braking abnormalities? Or did you see any leaks under the car or under the hood? If not, you may want to just try changing the brake fluid first at another dealer.

Good Luck.
2011 Leaf SL purchased 6-22-2011, sold 1-18-2017 with new battery.
2017 Leaf SV with Premium Package purchased 12-30-2016

LeftieBiker
Moderator
Posts: 13481
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Leaking master brake cylinder, 2011 Nissan LEAF

Tue Jan 05, 2016 4:38 am

Valdemar wrote:Brake fluid needs to be changed regularly. Over time it absorbs water from the air which affects its properties and can also cause corrosion and damage of the brake system components. Which reminds me I'm overdue for a replacement myself...
If (s)he's agonizing over it, there are test strips available to assess the state of the brake fluid.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

powersurge
Posts: 1528
Joined: Wed Oct 21, 2015 10:24 am
Delivery Date: 06 Dec 2014
Location: Long Island, NY

Re: Leaking master brake cylinder, 2011 Nissan LEAF

Tue Jan 05, 2016 7:58 am

I use this brake fluid tester all the time an know how the fluid is doing. I have 5 cars in my family and do all the maintenance, including bleeding fluid. I think that especially on the leaf, the new brake fluid every two years will eliminate any corrosion-related problems, as this is an electric braking car. I still don't know if the steering has fluid yet.

Here is the fluid tester:

http://www.amazon.com/Brake-Fluid-Teste ... B005HVG4GQ

If anyone has an interest, I can also recommend a fluid bleeder....


miscrms
Posts: 142
Joined: Fri Sep 05, 2014 10:25 am
Location: Phoenix, AZ

Re: Leaking master brake cylinder, 2011 Nissan LEAF

Tue Jan 05, 2016 10:29 am

@zeebomockingbird

As this doesn't seem to be a common failure, you might consider looking for a used part from a recycler. Seems like they go for $200-300 used rather than $1500-1900 new.

TimLee
Posts: 2811
Joined: Thu Jan 20, 2011 9:40 am
Delivery Date: 17 May 2011
Leaf Number: 2026
Location: Chattanooga, TN

Re: Leaking master brake cylinder, 2011 Nissan LEAF

Wed Jan 13, 2016 11:08 am

zeebomockingbird wrote:...
Have others had problems with their brake master cylinder ...
Not yet.
Part of why I bought extended warranty, but so far no failures in 4 1/2 years, 33,000 miles.

I do worry about LEAF maintenance cost after warranty runs out.

In another thread someone reported this part was replaced to fix grabby brakes.

I do still have grabby brakes.
Maybe I should push dealer to carefully inspect this part?

Tim Lee
Chattanooga, TN

Man. Date: 03/10/11, VIN # 2026
Delivered 05-17-2011
Blue Ocean, 2011 SL-eTec

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