What's on the Tow circuit on an 05 SR5 V8 AC w/o tow package? My battery is dead after leaving the truck sit for 3 days . Traced the problem to a 1/2 amp draw on the circuit labeled TOW on the fuse panel under the hood. It's a 20 amp fuse. Any ideas on what could be causing the draw (other than a wire short or corrrosion at the connector)? Can I safely pull this fuse and leave the circuit dead? Thanks in advance.
What's on the Tow circuit on an 05 SR5 V8 AC w/o tow package? My battery is dead after leaving the truck sit for 3 days . Traced the problem to a 1/2 amp draw on the circuit labeled TOW on the fuse panel under the hood. It's a 20 amp fuse. Any ideas on what could be causing the draw (other than a wire short or corrrosion at the connector)? Can I safely pull this fuse and leave the circuit dead? Thanks in advance.
I am looking in my book and I don't see a fuse for 20 amps labeled "tow". If you will double check to see what it says again and also list the name of the fuse on each side of it, I will look at the schematics tonight and try to help.
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03 Stratosphere Mica Stepside, 4.7 L, Supercharger, TRD Package, TRD Exhaust,
Scion Head Unit 08600-21802,
Custom leather heated seats 2 tone with TRD LOGO, Moonroof, ARE LID, ZR3 Laser Shifter, Denso IK22 .4mm Iridium Plugs, Scan Gauge 2,
Rhino Liner, Die Hard Platinum P5 battery 5.7 Killer
I'm really sorry but earlier I posted the wrong details. This is actually a 2003 Tundra and it's a 30 amp fuse labeled TOW TAIL. The fuse is in the foremost bank between several empty slots. It is perpendicular to and between the 5 amp ECU-B and the 15 amp PWR OUTLET 1 fuses.
When removing/replacing the fuse, the TOW TAIL relay throws. I've tried other relays in that location and they all give the same behavior. This truck does not have the tow hotch or package but does have the bumper that can take a ball.
Thanks again.
My manual only shows the circuit going to the relay then to the trailer connector "tail" pin. Can you look under the back and see if the connector was removed and maybe the wire is shorting? It should be a brown and/or green wire.
Ahhh! A 2003 Tundra. There is a TSB that covers that year model which has a wiring error. If you use the Auto-Off feature with your headlights, you are leaving the trailer circuit active. Manually turn your headlights off to kill this battery drain.
*Extang Full-Tilt Tonneau * Bedrug*Topline Tailgate Step *Mr. Gille Upper & Lower Billet Grille *WAAG Bumper Guards, front & rear *HT Side Step Nerf Bars *AVS Hood Protector *WeatherTech Vent Shades *JDM Black Taillights *TurnSmart Solar-power Mirror Turn-Signals *Altec 48" Line-of-Fire LED Light Kit *Altec 53" Screamer Amber Side Marker LED *PIAA Backup/Work Lights * 35 % Tinting *BullyLED Third Brake/Cargo Light *
Interior:
*Gentex Auto Dimming Compass/Temp Rear View *Garmin's Nuvi 660 GPS * Scan Guage II *Passport SR7 Radar/laser shifter *
Wheels/Tires:
*Moto Metal M0951 Gloss Black 17 in. Alloys *SpiderTrax 1.25" Wheel Spacers * Goodyear Fortera TripleTred radials P275/60R17 *
Suspension:
*Bilstein HD Shocks, F&R *Hellwig Rear Sway Bar & Helper Springs *TCS Poly Steering Rack Bushings *Wheeler's Front Sway Bar Bushings *Timbren SES Kit, Front & Rear *
Brakes:
*TRD Big Brake Kit (front) *
BAD BONEZ BJ
Last edited by BAD BONEZ BJ; 07-07-2008 at 01:35 PM.
But the OP says he does NOT have the tow package. Interesting...could this still be the problem? Looking at the diagram, I don't see what else would be causing the draw.
But the OP says he does NOT have the tow package. Interesting...could this still be the problem? Looking at the diagram, I don't see what else would be causing the draw.
Yeah, I caught that too. But if he has the circuits and fuses for Towing, then he has the same problem I had with the Circuit being left on (only applies to the AUTO-Headlight Off Feature), manually turn your headlamps off and see if that circuit still has the draw. If not then the TSB doesn't apply to this situation.
TSB for the amp. More details please, I don't know anything about this one.
BJ
Last edited by BAD BONEZ BJ; 07-07-2008 at 07:44 PM.
Some customers may intermittently experience a pop noise while turning the ignition key ON or OFF due to the JBL amplifier staying ON when the ignition key is OFF. This could result in a dead battery after an extended cold soak. An updated JBL amplifier is available to address this situation.
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My Truck: 2005 Tundra, 2UZFE. 4WD. AccessCab. Spectra Blue Mica (8M6). TRD. AT. CC. CK. DZ. FE. AW. LD. OF. TO. VP.
Thanks for that clarification, and for covering who it does apply to.
I think all the '03s have this problem, and it's only when and if you went to the dealer that they might tell you about it. In the meantime, you drain your battery every time you use the Auto-Off Headlight feature and leave the lights on. It leaves that trailer circuit on, as if the headlights were still on. But, I'm not sure there should be any draw if there is nothing connected to the circuit or, not enough to drain the battery
I noticed this the first time I hooked up the trailer and had the headlights on when I turned the truck off and jumped out. Lights went out everywhere but the trailer. It was if I still had all the lights on.
Do a search on the forum for that TSB and you'll find lots of discussion on this problem. I have the harness, but have never taken the time to install it. I just manually turn my lights off - old fashioned.
BJ
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2003 Tundra 4.7L V8 Access Cab Limited 4WD
w/ all factory packages,Black Onyx 202-rebadged. was stock 31K on 5/9/05, now 56K
*Extang Full-Tilt Tonneau * Bedrug*Topline Tailgate Step *Mr. Gille Upper & Lower Billet Grille *WAAG Bumper Guards, front & rear *HT Side Step Nerf Bars *AVS Hood Protector *WeatherTech Vent Shades *JDM Black Taillights *TurnSmart Solar-power Mirror Turn-Signals *Altec 48" Line-of-Fire LED Light Kit *Altec 53" Screamer Amber Side Marker LED *PIAA Backup/Work Lights * 35 % Tinting *BullyLED Third Brake/Cargo Light *
Interior:
*Gentex Auto Dimming Compass/Temp Rear View *Garmin's Nuvi 660 GPS * Scan Guage II *Passport SR7 Radar/laser shifter *
Wheels/Tires:
*Moto Metal M0951 Gloss Black 17 in. Alloys *SpiderTrax 1.25" Wheel Spacers * Goodyear Fortera TripleTred radials P275/60R17 *
Suspension:
*Bilstein HD Shocks, F&R *Hellwig Rear Sway Bar & Helper Springs *TCS Poly Steering Rack Bushings *Wheeler's Front Sway Bar Bushings *Timbren SES Kit, Front & Rear *
Brakes:
*TRD Big Brake Kit (front) *
BAD BONEZ BJ
Last edited by BAD BONEZ BJ; 07-07-2008 at 09:59 PM.
Thanks to all of you on the forum. Turning off the lights cut the current draw dramatically, from over 1 1/2 amps to around 0.3, but the residual still looks like it's more than just the clock and keyless entry. I've got an aftermarket sound system and alarm in it so I may just have to deal with that draw. I'll do some more fuse pulling this weekend. Hopefully I'll be able to start it without a jump after coming back from vacation
help - what's on this circuit?
Re: help - what's on this circuit?
Linear Mode
