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Parking and Battery Light On

I have a '90 4Runner 4x4 with 300,000 miles. While on vacation I parked the truck in a cool and damp location. Each day when the truck was first started I nitced that both the parking brake and battery light would come on along with the battery level meter being in the lower half to quarter of the operationg range. This would indicate the charging system is not charging the battery. But I am puzzled as to why the parking brake light was also on. Also, after driving for just

3-7 minutes the charging system would start working again and would work for the rest of the day.

This continued on for the week until it came time to make the trip home. That morning the charging failed to kick in until after a couple of hours. It works fine while at home, since it is stored in a dry garage.

I suspect there is a bad connection where moisture is condesing and is opening the circuit. After awhile it dries out and all is well. The question I have is what areas can the home mechanic check before taking it in to the shop? Do the parking and battery light being on point to a speciific component or area?

Thanks in advance, Mark

Reply to
Mark
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It's a quirk in the wiring, the lights all come on at once.

More than likely the brushes in the alternator are just worn out, and for a while they would warm up and just make contact with the rotor field slip rings - but that only lasts a few days.

Get that alternator rebuilt, or exchange it for a factory rebuild. If money is tight you can get the parts and do it yourself.

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Reply to
Bruce L. Bergman

If the brake and charge lights come on during revving of the engine then it's a sign that the carbon alternator brushes require replacing as this is the mileage for them to wear out. In alternators the brushes wear out on average every 140-170 000 miles where on the dashboard the brake & charge light both come on at the same time. About half of the auto electric shops in your local yellow pages sell carbon alternator brushes and copper solenoid starter contacts for about $5/pair.

Another way to verify that the alternator is not charging is while the engine is running bring a metal screwdriver or any metal object near the alternator and if the alternator is working properly then it should act like a magnet and grab the screwdriver.

For carbon brushes R&R:

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For decoding the dashboard lights:

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Here are part #'s for Toyota alternator carbon brushes and copper solenoid starter contacts which are used in about 95% of all Toyota vehicles.

Toyota alternator Brushes with holder:

Toyota # 27370-35060=3D$29 CDN Honda # 31105-PZ1-003 Metro # 39-82003

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,Pomona,California) Unknown brand name # F4019-53035

Alternator brush only (qty:1 brush unless otherwise stated):

AC Delco # E724 AC Delco # E731 (side wire and concave tip) Ace Electric # DA-61 (brush only),S-5367 (brush holder) Beck Arnley # 178-1669 (side wire and concave tip) Beck Arnley # 178-1376 Borg Warner # X580 (side wire and concave tip) Canadian Tire # 19-2050-6=3D$4.49/pair Daihatsu # 27370-87302-000 Daihatsu # 27371-63020-000 Daihatsu # 27371-87501-000 Daihatsu # 27371-70300-000 Echlin # E601=3D$8.16 CDN/pair (UAP/NAPA) Echlin # ECHE601 Echlin # EC480 Echlin # ECHE480 GP Sorensen # 255047 (side wire and concave tip) GM # 94123056 GM # 96054118 Honda # 31144-PD1-004=3D$9.72 Honda # 31144-PD1-0040 Honda # 31144-PD1-0030 Honda # 31150-PR7-A01 Honda # 31150-PTO-003 Hino Industries # 021660-0390 Hino Industries # 021660-0510 Isuzu # 8-94123-056-0 Isuzu # 8-97032-308-0 Isuzu # 8-97032-310-0 Mazda # 021660-0390 Mazda # 021660-0510 Mazda # KL47-18-W75 Metro # 38-82001(side wire concave tip)

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,Pomona,California) Mileage Plus # E601SB Mitsubishi # MD604474 Mitsubishi # 21660-0510 Niehoff # WA571 (side wire and concave tip) NipponDenso # 021660-0390 NipponDenso # 021660-0510 Standard # JX-116 (side wire and concave tip) Subaru # 021660-0390 Subaru # 021660-0510 Suzuki # 31631-82610 Suzuki # 31656-82611 Suzuki # 021660-0510 Toyota # 27370-42010 Toyota # 27370-75060 Toyota # 27371-63020=3D$5.80 (up to 9105) (side wire and concave tip) Toyota # 27371-70300=3D$5.20 (9105-9511) Toyota # 27371-76004-71 UAP/NAPA # MPEE601SB Victory Lap # FAX57=3D$4.49 CDN/pair (Canadian Tire) Wilson's Electric # 26-29-7534 (side wire and concave tip)=3D$2.20 each CDN (Diesel Auto Electric)(Parts for Trucks,box of 10 for $3.40 CDN)

Specifications: Length=3D15 mm Width=3D7 mm Thickness=3D5 mm Lead length=3D49 mm

These Honda alternators are the same except the pulley must be swapped:

1986-89 Honda Accord (Carb),the EFI can be used but the voltage reg must be swapped 1990-93 Acura Integra

For alternator upgrade:

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19 Toyota (NipponDenso now called Denso) starter repair sites:

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Starter contact kits (8mm ID hole):

Ace Electric # S-5263 (only two contacts) Ace Electric # S-5264 (only two contacts) Metro # 66-82104 (only two contacts)

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,Pomona,California) Toyota # 28226-72010/80 (battery side)(also1KZTE-2LT-1KZT) Toyota # 28226-72080 (8808-9108) Toyota # 28226-16130 (9108-9308) Toyota # 28226-55050 (9308-9511) Toyota # 28226-70040 (9308-9511) Toyota # 28226-72040 (motor side if needed) Toyota # 28226-72010 (8808-9511) Toyota # 28226-74070 (9108-9511) (2000 Tundra & others) Toyota # 28226-22050 (2000 Tundra & others) Toyota # 28226-66060 (1993-1997 Land Cruiser 2.0 KW starters)

For others besides 22R series:

Toyota # 28226-54220 (motor side) (2LTE, 3L..LN13# IKZTE, 2L#, KZN130,LN108,112,85..4FC) Toyota # 28226-54250 (Diesel Surf 2.4TD, contains a new end cover and gasket) Toyota # 28226-54320 (battery side) (2LTE, 3L..LN13# IKZTE, 2L#, KZN130, LN108,112,85..4FC,3B-1HZ-BJ73-HZJ7#-1KZT-KZJ70) Toyota # 28226-17030 (battery side) (1H#-HDJ80-HZJ80) Toyota # 28226-56250 (battery side) (3B-1HZ-1PZ-PZJ7#)

Starter contacts only (8mm ID hole):

Ace Electric # S-5231 Ace Electric # S-5293 (crescent moon shape) Ace Electric # S-5295 (crescent moon shape) Metro # 66-82106

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,Pomona,California) Tons more at:
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# 28226-70040Wilson's Electric # 45-29-652 (maybe it's 45-29-6521) Starter brushes:

AC Delco # D762 GP Sorensen # 255048 Standard # JX-117

Whether your starter uses two rectangular types or one rectangular and one crescent you can substitute with two squares or one square and one crescent so any of the above part #'s for those kits will be the right ones,or about half of the auto electric shops in your local yellow pages would sell aftermarket contacts for only $5 each or the pair.

Sidney=AE =99 Repairs tv's,vcr's,home/car audio out of my home E-mail: snipped-for-privacy@yahoo.com Dartmouth,Nova Scotia Canada

1985 Toyota 4-Runner,solid front straight axle,factory cruise control,sunroof,22R-E,W56,RN60LV-MSEK,rusted rear step/towing chrome bumper with 251 000 KM
Reply to
sidneybek

On my 1987 it turned out to be the alternator. It would charge at a constant 15 vdc but the two lights stayed on when I replaced them after buying the truck. I took it to a shop that specializes in starter/alternator and batteries and he said it checked out okay. ( I found out later that his bench check did not test the charging light circuit.) The alternator has a light signal terminal that sends a voltage to the instrument cluster.

A couple of years later when the voltage increased to almost 16 vdc I replaced the alternator, put the bulbs back in and the problem was solved.

In my case it may have been the wrong alternater was installed before I bought the truck. NAPA showed two different part #s that changed with the VIN #.

Reply to
Jarhead

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