battery light on, off

50

Asked by Jun 14, 2014 at 08:35 PM about the 2002 Toyota Tacoma 2 Dr STD 4WD Standard Cab LB

Question type: Maintenance & Repair

I took my Tacoma 2002 to the shop because the battery light came on several times; the service guy tested the battery and the alternator and both checked OK
What else can cause the light to turn on?

13 Answers

108,835

Loose/dirty battery connections will cause this. Also check the negative battery connections on the frame and motor. Loose/slipping alternator belt will also cause this.

7 out of 7 people think this is helpful.
1,485

dandyoun has the best DYI for you to do. (How tos are elsewhere in the forum). Then if you do need to have it worked on. I'd take it somewhere else. No certified mechanic would have let you drive off without checking those other "normal" possibilities. Your guy was ineffective at best.

50

dandyoun, I have checked the terminals and connections. Everything is tight and clean. The dealer service receipt mentions they checked the belt and everything OK. Is it possible that Emissions problems could cause service lights to come on? Thanks for your answers, guys.

2 out of 2 people think this is helpful.
108,835

Is it your battery light or check engine light(service engine)? If check engine light then have the codes read. Auto zone will do this for free. Post codes back on here and we can narrow down the issues you are having. Check engine light typically is an emissions issue. Need to have codes read. Serious damage can be caused to cat converter in some situations.

1 out of 1 people think this is helpful.
50

No, it is the battery light. The car starts OK, then the light comes on and after driving for a while goes out. I do not have Autozone in town, can I drive safely to the next town, about 20/30 miles?

2 out of 2 people think this is helpful.
108,835

Ok battery lights are typically turned on due to one or more of the following. Loose connections, dirty connections, worn out connectors, dirty/loose frame /motor negative battery connections, loose alternator belt, weak/bad battery and/or weak/bad alternator. I feel you will find your solution in one of these items.

1 out of 1 people think this is helpful.
108,835

With it coming on then going out I would check alternator belt tension first.

1 out of 1 people think this is helpful.
70

So I am dealing with this problem now. My 2001 Tacoma has ran great but for a while I could hear a belt slip but didn't cause any problems Then this Thanksgiving weekend the light was on and the battery was dying. Radio, dash, and heater fan all stopped, then the truck stopped cuz there was no more battery to power the fuel injection. So I bought a new battery to keep from being toed. Worked till I got where I was going. We took the battery out charged both (old and new battery). Cleaned all the terminals cuz I have a corrosion problem. Got home and took it to the shop. They changed the bets and connections and what not. Sent it home. Worked for a day. The following day the starter seized up. Took it back, they replaced the starter. And now today the battery light is back. Off and on. Idk what else to do.

7 out of 7 people think this is helpful.
50

Problem solved, Finally my car started to slow down and stopped (thank God!) when arriving at my house, It was a bad alternator. I had to replace both to the tune of $8oo+.

1 out of 1 people think this is helpful.
1,485

Tessa2002 Thanks for the update; good to know you're on the road .

10

$800 to replace the bad alternator? $800? Holy Chit my man. It's a Toyota not a Maserati

1 out of 1 people think this is helpful.

WOW! I'm researching for a friend and she is going to buy a $150 alternator and a 12 pack of beer for me to replace it. Youtube video shows only 2 bolts on alternator, 1 bolt on tensioner, 1 bolt on electrical wire to alternator, and 1 bolt for negative terminal on battery. $800 was pricey!

Hope that beer is worth the labor, on my taco I am going to have to go through the wheel well to replace my alternator, 2010 and up were bad designs by toyota

Your Answer

Add photo

Related Questions

Tacoma

Looking for a Used Tacoma in your area?

CarGurus has 39,893 nationwide Tacoma listings starting at $1,995.

ZIP:

Search Toyota Tacoma Questions

Toyota Tacoma Experts

#1 Tom Demyan
Tom Demyan
Reputation 960
#2 genxer36
genxer36
Reputation 330
#3 jtubbs
jtubbs
Reputation 310
View All

Related Models For Sale

Used Toyota Tundra
493 Great Deals out of 34,174 listings starting at $3,000
Used Nissan Frontier
341 Great Deals out of 26,858 listings starting at $2,400
Used Ford F-150
2,264 Great Deals out of 209,447 listings starting at $1,499
Used Chevrolet Silverado 1500
1,740 Great Deals out of 169,934 listings starting at $1,800
Used Toyota 4Runner
283 Great Deals out of 20,880 listings starting at $1,995
Used GMC Sierra 1500
802 Great Deals out of 67,044 listings starting at $1,499
Used Ford Ranger
187 Great Deals out of 6,009 listings starting at $1,500
Used Jeep Wrangler
289 Great Deals out of 18,693 listings starting at $2,995
Used Dodge Ram 1500
453 Great Deals out of 11,387 listings starting at $700
Used Toyota Camry
848 Great Deals out of 90,973 listings starting at $249

Used Cars For Sale

2017 Toyota Tacoma For Sale
12 Great Deals out of 22,362 listings starting at $22,328
2016 Toyota Tacoma For Sale
71 Great Deals out of 2,542 listings starting at $20,000
2015 Toyota Tacoma For Sale
65 Great Deals out of 2,877 listings starting at $16,749
2014 Toyota Tacoma For Sale
44 Great Deals out of 2,027 listings starting at $8,995
2013 Toyota Tacoma For Sale
54 Great Deals out of 2,039 listings starting at $8,999