How can I diagnose a slow battery drain that appears to be caused by the fuse labelled as "short" in the underhood fuse box


Asked by Feb 16, 2015 at 12:48 PM about the 2005 Toyota Highlander Limited V6 AWD

Question type: Maintenance & Repair

I have a 2005 Toyota Highlander Limited 3.3 that has had an ongoing slow battery drain issue. If I don't drive it every day or so, and in cold weather for a long enough time every day, the battery gets drained. If I remove the fuse labelled as "short" on the underhood fuse box, it stops, but that fuse enables a lot of the interior accessories, like dash lights, AC memory, Radio, etc that I would rather not have to do without. I purchased the car about 6 months ago from family and knew about the problem. The battery was replaced, as well as the alternator a month or so prior to my purchase in an attempt to fix the issue.

3 Answers

Tom Demyan

Since you know what fuse it is, now you have to pinpoint which accessory is your issue. You have to do some probing with your multimeter to know which one it is. I assume you don't have the knowledge to do so, so have a local shop help you out. You can tell them what you told us to help them along.

2 out of 2 people think this is helpful.

Tom is right, you're half way there since you know what fuse it is. I's known as parasitic drain. Since the dash lights are out, your taillights may be also. Looking at pictures of a Highlander, it does not look like the taillights are on the rear hatch, but the license plate lights are. Have a look at where the wires go from rear hatch to chassis, from 10 years and hundreds of open/close, that MAYBE it.


If you do have a multi-meter, normally the anti-theft and clock will draw on battery, but only a miniscule amount. Put it on 12V and set on amps, and disconnect Neg-- battery cable. Put leads between Neg battery post and ground cable terminal, or just ground it anywhere on the chassis. Normal draw with engine off, key out, is 0.25 amps. Or ΒΌ of 1 amp@12Volts

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions


Looking for a Used Highlander in your area?

CarGurus has 30,395 nationwide Highlander listings starting at $1,990.


Search Toyota Highlander Questions

Toyota Highlander Experts

#1 Tom Demyan
Tom Demyan
Reputation 3,370
#2 Wendy Tucker
Wendy Tucker
Reputation 3,290
#3 Shawntele Lewis
Shawntele Lewis
Reputation 2,270
View All

Related Models For Sale

Used Honda Pilot"
577 Great Deals out of 19,396 listings starting at $1,800
Used Toyota 4Runner"
382 Great Deals out of 18,520 listings starting at $2,400
Used Toyota RAV4"
1,176 Great Deals out of 48,250 listings starting at $2,495
Used Acura MDX"
490 Great Deals out of 15,311 listings starting at $1,999
Used Toyota Highlander Hybrid"
29 Great Deals out of 1,451 listings starting at $4,950
Used Nissan Pathfinder"
463 Great Deals out of 24,628 listings starting at $2,800
Used Toyota Sienna"
367 Great Deals out of 25,533 listings starting at $600
Used Toyota Camry"
1,597 Great Deals out of 97,672 listings starting at $895
Used Honda CR-V"
1,613 Great Deals out of 81,345 listings starting at $1,695
Used Ford Explorer"
1,333 Great Deals out of 71,185 listings starting at $985
Used Toyota Sequoia"
170 Great Deals out of 6,664 listings starting at $2,977
Used Toyota Tacoma"
632 Great Deals out of 30,001 listings starting at $2,850
Used Jeep Grand Cherokee"
1,213 Great Deals out of 73,905 listings starting at $1,200

Used Cars For Sale