Love this forum. My 04 SL (new to me since Jan 2012) started having problems weeks after I took ownership of it. After some detective work and with the help of this forum I was able to pinpoint the problem to the alternator. It was already replaced under recall by a previous owner so I had it replaced with a rebuilt alternator at my expense. All was well for a while...

A couple weeks ago my MO failed to start. Apparently I'd left the lights on and it died. I wasn't gone that long but fair enough. I boost it, it starts and I drive around for a while. Next time I start the car same thing. A week later it went into limp mode a couple of times but I was able to kick it out by flooring the accel. Charge and Brake lights also came on. I had the battery tested and it failed so I bought a new battery.

Now all is well so far but the other day I noticed the Charge and Brake lights flickering intermittently. Revving the engine seems to change the pattern of flickering sometimes but overall the RPM seems to have no effect. The lights go away after a few minutes of driving. While changing my oil I disconnected the battery, cleaned the terminals and clamps but the problem persists.

I'm hoping that this just means a bad ground connection somewhere but I fear it means the 6 month old alternator is failing again?

[edit] Also had A/C work done recently but it was just a leak test and recharge so I figure the serpentine belt wasn't messed with. [/edit]

 

Did you ever get resolve on this? I am having the same problem.

 

I've got a quick question, and who better to ask than this forum... I recently had my alternator replaced on my 05 Murano, and maybe 2-3 weeks afterwards I got into a minor accident (two days ago). To make a long story short, there was some front end damage, but the radiator is fine since the engine isn't overheating, and the AC is fine... really the only thing damaged is the bumper... BUT... now I see the brake light+battery light combo on the dash. Any chance it could be because of the accident? Just asking because I would like to know how to approach the situation..

 

You won't know until you find out the cause. I suspect that the reason the lights are on is that your battery is discharging - maybe a cable was broken. I don't recall the meaning of the lights on, but your manual may tell you.l

 

Alternator is mounted relatively low so it it possible it got hit, or a wire going to it broke.

 

battery light still on

i've replaced my alternator, and the battery light still shows dim during the day and lit up at night with all the other lights on the instrument panel, any advice how to take it off?

 

i've replaced my alternator, and the battery light still shows dim during the day and lit up at night with all the other lights on the instrument panel, any advice how to take it off?

I'd suggest having your charging system tested instead of guessing.

 

Brake Battery light

My 2009 just started displaying the brake battery light. It only come on briefly when it's cold and then stays off once warm. Does it mean when the lights on, it's not charging? I guess from the posts here I should make an appointment with my dealer asap.

 

Wow 12 days with no replies. Well I brought it to the dealer and they said the alternator tested bad and replaced it. It was under the warrantee I had purchased and I had to shell out $100 for the deductible. The dealer also hooked me up with a rental for a few days. So far so good.

 

wow

thanks for sharing!

 

I have a 2010 Murano that died on me last week. Had it towed to the nearest mechanic. Battery, alternator, and starter all tested good, no other codes. After 3 days, they finally decided to replace the alternator. Now my brake and battery/charge lights keep coming on and off intermittently. When I took it back, the mechanic told me to try to use as little power while driving as possible as everything was testing fine. I think their tester may need testing. Lol. My car doesn't seem as zippy, either.

Any suggestions?

 

IF THE BRAKE AND BATTERY WARNING filezilla uc browser rufus LIGHTS COME ON TOGETHER, THERE IS AN IMMINENT ALTERNATOR FAILURE WHICH WILL COMPLETELY DISABLE YOUR VEHICLE.

 

I was monitoring the voltage directly from the battery as I was driving and for my surprise, the Voltage from the battery was reading as high as 16.4V, which could harm some circuits. Also, it went down to 9 Volts and noticed the battery light on dashboard came on when the voltage dropped below 12 and above 14.5 volts. Any experience with this?

 

Typically, this would be a sign of a faulty voltage regulator, but you would still need to verify the B, L, and S terminal circuits as well as do voltage drop tests on both the positive and negative sides of the alternator circuit.

What year is your car? The 2nd generation (and I believe 3rd gen as well) also has a battery current sensor that's monitored by the ECM, which uses the signal to control alternator output via the IPDM (with the alternator's internal voltage regulator as a backup if no signal is received).

 

I have a 2010 Murano SL, I will troubleshoot the alternator and wiring as soon as I get home and will keep you guys posted on any findings.

 

Got home and took the alternator apart and found corrosion due to radiator fluid. See pics.

 

Got home and took the alternator apart and found corrosion due to radiator fluid. See pics.

Since you have it apart, do you intend to rebuild it? I recall seeing some rebuild kits on eBay and maybe Amazon for something $40-50 although they only had new bearings, brushes, and voltage regulator (no slip rings). That was a while ago so there may be more comprehensive options available now.

 

2011 Murano. Battery and brake light have been coming on for some time now. I had it checked and they couldn’t find anything wrong. Yesterday and today it happened again. Only I lost power each time. I put on my hazards, turned the vehicle off and after a few minutes it cranked again. So yesterday, I called the dealership and they said they couldn’t see me until Apr 11th. Today it did it twice and the second time it wouldn’t crank back up. All lights were flashing and entire dashboard lit up. I was two mins from the dealership. Had my husband come and push me with his truck. Thankfully I only had one turn. Brakes barely worked. They called me from the dealership. They can’t find anything wrong. Battery and alternator working at capacity. They wanted me come get it. I refused. Told them to keep it and drive it. We’ll see what they say tomorrow. I’m wondering if it’s sensor. This is an accident waiting to happen!

 

If they actually did test the battery and alternator and both were functioning normally then I'd suggest checking the negative ground cable next, especially if you live in the Rust Belt.

 

Yes two technicians from different businesses have confirmed it’s neither the battery or alternator. Thank you. I will have them check.

 

Hi, saw this thread with recent update, made me join the group. I have 2009 Mo S, started seeing this brake + battery this week. it is intermittent and only pops up for a few minutes or seconds. Turning the engine off/on seemed to resolve it but it came back the next day, so I did the same thing. so far it didn't come back yet. I wasn't able to do troubleshoot yet the problem but I plan to take voltage measurements on the battery terminals if this pops up again. I did some baseline recently: 12.69V engine off, 14.19 Engine on, no brake + batt light. Can somebody who has this try do the same? I'm just curious if the lights is a sign of over or under charging the battery and by how much %... thanks!

 

Looks like your alternator is fine.

I would have your battery load tested. When you tested it, did you dissipate the surface charge by turning on the headlights for several seconds before testing it? Doing so will give a more reliable indication of its health...

How old is the battery?

 

This keeps happening to my 2007 Murano. Changed the battery twice. Changed the alternator twice. Finally took it to 2 different mechanics after our family mechanic couldn’t figure out what else could be wrong, and both mechanics ran diagnostics and thoroughly checked the car and nothing. One mechanic just offered to get a high quality alternator and replaced it. The car drove for two weeks and the lights came back on. I don’t understand what is going on and why no one seems to find anything wrong.

 

Brake & Battery Lights On Together Means Imminent Vehicle Failure As some members have had some bad experiences because they were not aware of the meaning of the warning signal, please allow me to make this Public Service Announcement... IF THE BRAKE AND BATTERY WARNING LIGHTS COME ON TOGETHER, THERE IS AN IMMINENT ALTERNATOR FAILURE WHICH WILL COMPLETELY DISABLE YOUR VEHICLE. You may be able to drive several more miles, but maybe not. Make plans accordingly. Limit the drain on your battery and get to a location where the vehicle can be safely towed if necessary. Contact Nissan service immediately to have the alternator replaced. See CopperKat's photo of the BRAKE and BATTERY/CHARGE lights on in his post below. UPDATE 7/14/05: The Nissan Murano alternators are being recalled. For more information, please see the recall thread at the link.

Completely wrong information i when base on what you guys post an thats no true i just replace the alternator wich is a pain to get an i still have the same lights on

 

Unfortunately, rebuilt and non-OEM alternators have a horrible track record. It can sometimes take multiple alternators before a good one is found...

Have both your battery and alternator load tested to know if they are good.

OEM alternators have a good track record, but are more expensive...

Verify the negative battery terminal cable and its grounds under the battery and at the CVT are good.

 

Hello I've had the brake light and battery come on before having my breaks done and a new battery installed also had everything checked out along with the Alternator and everything is good but the light still comes on sometimes what could be the issue please ?

 

1) It's brakes, not breaks, unless the brakes are broken.
2) The lights generally indicate a charging problem...but...
3) Are any trouble codes present? That's a good place to start.

And I suggest you do this to check the battery and alternator, because I suspect the alternator has a problem, regardless of having it "checked out."

 

1) It's brakes, not breaks, unless the brakes are broken.
2) The lights generally indicate a charging problem...but...
3) Are any trouble codes present? That's a good place to start.

And I suggest you do this to check the battery and alternator, because I suspect the alternator has a problem, regardless of having it "checked out."

 

A suggestion - if you have a battery charger, charge the battery overnight to get it FULL. Then drive it and see if you have any warning lights in the first 10-15 minutes. If you don't see any, my guess would be that there is either a defective battery or a bad alternator. During that first few minutes I would expect a fully charged battery to keep the voltage up.

That's a guess, but it is free if you have a charger...and NOT a trickle charger; they're only good for storage.

A battery charger is a great thing to have - they last for decades.

 

Thank you so much I will get one .

 

I hope that helps you. The Murano is very prone to weird trouble lights and trouble codes when the voltage isn't just right. If nothing else, having a decent charger will save you headaches more than once in years to come.

 

Thank you ,I was looking on Amazon last night I viewed many, can you recommend a good one

 

FWIW, I have this one, it works well for me.

Amazon.com: CTEK - 40-206 MXS 5.0 Fully Automatic 4.3 amp Battery Charger and Maintainer 12V : Automotive

 

Thank you I will look it up

 

I would recommend something like this, which has a lot more capability, including a higher amp charge rate.

It handles standard batteries, gel cells, AGM batteries, and deep cycle batteries. Different types of batteries other than lead-acid are more common all the time; you want a charger that's versatile. Two of my four cars use AGM batteries, one has a gel cell, and the other is a lead-acid. This is also a good price for a charger with this capability.

Amazon.com: Schumacher SC1281 6/12V Fully Automatic Battery Charger, Engine Starter, Boost Maintainer and Auto Desulfator with Advanced Diagnostic Testing- 100 Amp/30 Amp, 6V/12V : Automotive

One thing about chargers, don't buy LESS than you need, or something that's barely adequate. Buy a good one that does more than you think you need, and sooner or later you will find out that you really did need everything it does. Schumacher is the granddaddy of all battery chargers, and they know what they're doing.

 

The charger I posted is a modern charger that has all the same capabilities of the Schumacher other than 100 Amp starting and 30 Amp charging. Mine also supports AGM/gel/deep cycle batteries and has all the advanced charging algorithms. I use it to maintain my Duracell AGM battery. I got deal on my charger, Amazon Warehouse for $64. You can get a similar Amazon Warehouse price on the Schumacher, I currently see one for $67.

I already have an old Craftsman charger that supports 50 Amp starting and 10 Amp charging. Personally, I would only charge at 10 Amp in an emergency, it stresses the battery more than 4-6 Amp charging.

All said, the Schumacher looks like a great choice for a battery charger!