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2009 Nissan Altima SL - Brake Light


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AJB2011
New User

Oct 11, 2011, 5:21 PM

Post #1 of 11 (6514 views)
2009 Nissan Altima SL - Brake Light Sign In

2009 Nissan Altima SL
29,700 miles
2.5 liter engine

Purchased the car brand new in 2009. Recenty, upon exceleration the brake light is coming on. Stays on for a few seconds and then goes back out. Took car to dealership and was told my brake pads were fine but the fluid was low.

Question: Why would brake fluid be low at 29,700?


(This post was edited by AJB2011 on Oct 11, 2011, 5:23 PM)


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 11, 2011, 5:28 PM

Post #2 of 11 (6508 views)
Re: 2009 Nissan Altima SL - Brake Light Sign In

The usual reason is either worn brake pads or a leak in the system somewhere.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Blulakr
User

Oct 11, 2011, 7:53 PM

Post #3 of 11 (6487 views)
Re: 2009 Nissan Altima SL - Brake Light Sign In

As the brake pads wear the caliper pistons extend out. The brake fluid from the master cylinder fills in the void behind the caliper pistons at each wheel. This causes a normal drop in master cylinder fluid level.

My guess is that while your brake pads are probably still ok, they are more than 50% worn.


(This post was edited by Blulakr on Oct 11, 2011, 7:54 PM)


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 12, 2011, 3:01 AM

Post #4 of 11 (6474 views)
Re: 2009 Nissan Altima SL - Brake Light Sign In

With that amount of brake pad wear, I wouldn't expect enough fluid transfer to light the warning light.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Old 396
User

Oct 12, 2011, 6:18 PM

Post #5 of 11 (6453 views)
Re: 2009 Nissan Altima SL - Brake Light Sign In

Question: Why would brake fluid be low at 29,700?

Have you ruled out a system leak (or leaks)?

Stands to reason that if any fluid in any motor vehicle suddenly becomes low that there must be a leak.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 12, 2011, 6:21 PM

Post #6 of 11 (6445 views)
Re: 2009 Nissan Altima SL - Brake Light Sign In

I just said that. there is no reason to repeat the same advice and conclusion



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Old 396
User

Oct 12, 2011, 6:58 PM

Post #7 of 11 (6439 views)
Re: 2009 Nissan Altima SL - Brake Light Sign In

Sorry hammertime. I have only one eye as a result of a war injury and I missed your post.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 12, 2011, 7:03 PM

Post #8 of 11 (6437 views)
Re: 2009 Nissan Altima SL - Brake Light Sign In

Oh really, Sorry to hear that. Which war?



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Old 396
User

Oct 13, 2011, 2:59 AM

Post #9 of 11 (6426 views)
Re: 2009 Nissan Altima SL - Brake Light Sign In

Thank you Hammertime Vietnam.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 13, 2011, 3:03 AM

Post #10 of 11 (6422 views)
Re: 2009 Nissan Altima SL - Brake Light Sign In

What year? Where were you stationed? Where were you hurt?



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Old 396
User

Oct 13, 2011, 4:33 AM

Post #11 of 11 (6414 views)
Re: 2009 Nissan Altima SL - Brake Light Sign In

Shadow Warriors
Death in the Dark
3rd Battalion 9th Marines
Wounded March 3rd 1969
Operation Dewey Canyon
A Shau Valley

Just curious why you deleted the instrument cluster question I asked you?








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