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Expert Answers about Toyota


  • Removing Global Door Lock Cylinder - No Original Key
  • You can always call a lock smith but that is not cheap. I would not try to force them to turn as you could damage the reminder of the latch housing. You will have to drill them out. Start with a small bit, like a 1/8, and work your way up to a 1/4 inch or 5/16. Eventually you'll remove enough of the cylinder that you can get the lock open. Do not drill very deep as you still need the structure that supports the new lock cylinder. If in the worst case you end up damaging the latch then...
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  • No Power on Red Brake Controller Wire when Brake Pedal Pressed on a 2013 Toyota Tundra
  • The wiring harness you should be using on your 2013 Toyota Tundra is # 3040-P. While it is unlikely it is wired incorrectly it is possible. You can use your test light to test the connector on the vehicle (where 3040-P plugs into) and see if it has power when you step on the brake pedal. If it does then check to see if the red wire is connected in the corresponding location in the harness. If not you can move it. If there is no power then there is something amiss on the vehicle side that...
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  • Trailer Lights Wont Work with Headlights On
  • When we have customers tell us that their trailer lights only work when the vehicle's headlights are off then this is usually a ground issue. Did you check both the trailer side and vehicle side connector? If not I would do this first and also, by check I mean you should remove each of them, sand down the surface and then reattach with new mounting hardware. A visual inspection of the ground terminal is not sufficient to check for function. The other potential cause is that the lights...
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  • Troubleshooting Tekonsha T-One Wiring Harness Not Working On a 2013 Toyota Highlander
  • I am not aware of any trim levels the T-One Vehicle Wiring Harness # 118449 is not compatible with on your 2013 Toyota Highlander. I want to verify how you tested the 4-Way as if you connected to a trailer that has an issue with the lighting that may be the case. I recommend using a Test Light # PTW2993 to verify the 4-way operation. I recommend starting with checking the fuses on your Highlander. You will want to check that the included fuse is good along with any other fuses that are...
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  • Troubleshooting Trailer Lights Not Working with New Wiring Harness on 2011 Toyota Highlander
  • Glad to hear that you were able to easily install the Curt Trailer Hitch Receiver # 13534. I will be happy to help you troubleshoot the Curt T-Connector # 56042 for your 2011 Toyota Highlander. Since you do have the factory tow package on your Highlander the only thing that I can think of is that you either have a bad fuse or no fuse at all for the trailer lights. I took a look at the online version of the owner's manual for your vehicle and found that the fuse for the trailer lights is...
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  • Troubleshooting Error Code of 2016 Toyota Tundra After Bypassing Factory Controller
  • That issue is going to be fixed by unplugging the vehicle battery for a minute then plugging it back in. Your factory brake controller's error messages were connected to the dash display you have on the truck so since the controller is no longer connected it's sending a fault message to the dash of your truck.
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  • Tail Lights Dont Work Using Tekonsha Prodigy RF Wireless Trailer Brake Controller
  • In order to determine if the Tekonsha Prodigy RF Wireless Trailer Brake Controller part # TK94FR is causing your tail lights not to function you would need to unplug the trailer end connector from the brake controller and then plug that directly into the vehicle. If all the tail light functions then you know the issue is with the brake controller. The only thing you can really do to troubleshoot the brake controller is check the pins inside each trailer connector. If the pins are fine then...
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  • Troubleshooting NC Message on a Tekonsha Primus IQ Brake Controller
  • I would be happy to help you troubleshoot the problems you are having with the Tekonsha Primus IQ Trailer Brake Controller item # TK90160. You will first want to check your Tundra's 7-way connector for debris, corrosion, and any faulty wiring connected to it. Afterwards check your trailer's 7-way for the same thing. If you're still getting a N.C. code on your controller I recommend verifying the brake controller wire has been properly connected and there isn't any damage or faults between...
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  • Troubleshooting Trailer Taillights Where only Running Lights Work
  • Since all of your trailer taillights work with one of your vehicles but not with your 2012 Toyota Rav4 that would indicate that the problem is in the wiring of your Rav4. It could be as simple as corrosion on the trailer plug of your Rav4, or it could be blown fuses or relays of the vehicle. After cleaning the connectector you will want to do is use a circuit tester like our part # PTW2993 to test the circuits of the 4-way for voltage in all of the correct places when a buddy applies the...
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  • Troubleshooting Hopkins Trailer Wiring Harness on a 1999 Toyota Tacoma
  • What you're describing is a textbook ground problem. The ground connection isn't strong enough to handle the load with the running lights on but will handle it when it's just the brake or turn signals. But you said your ground is good. In this case make sure the pins of the Hopkins # HM43315 are clean and corrosion free. Also check the tester, especially the ground. I'd also check the connector with a trailer instead of just a tester or check the tester on another vehicle's 4-way....
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  • Tekonsha Voyager Does Not Light Up Even when Connected Directly to a Battery
  • The Tekonsha Voyager brake controller # 39510 will not light up at all unless a trailer is connected. Once a trailer is connected the indicator will be green. Using the manual override or brake pedal will change the indicator to red. If it does not light up when a trailer is connected then it could be a dirty or corroded trailer connector so make sure both the vehicle and trailer side connectors are clean and free of corrosion inside, where the wires attach, and outside on the pins. It...
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  • Weak Trailer Brakes Using a Tekonsha P3 Trailer Brake Controller and 2010 Toyota Tundra
  • First, since you have changed something on the braking system, it is recommended to go through and re-set the brake controller as if it were the first time. In doing so make sure that it is mounted within its range as described in the instructions and not tilted or turned to one side or the other. With the controller mounted correctly and reset you can test the output from the controller. You do not necessarily want to go by what the display says so I recommend using a circuit tester...
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  • Trailer Lights Blow Fuse When Lights Turned On from 2005 Toyota Tacoma
  • It sounds like either the trailer lights have too much of a draw for your Tacoma's wiring, or there is a short somewhere on the running light circuit. Since both the trailer and Toyota dealers say there are not issues in the wiring, it sounds like the issue is the power draw from the trailer lights. It is possible for some trucks, such as the Silverado you referenced, to handle more amps from trailer lights than other trucks. One way to decrease the draw of the lights on your trailer...
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  • Trailer Wiring Harness Fuse Blown When Headlights are Turned On on a 2007 Toyota RAV4
  • It sounds like there is a problem with the trailer wiring that you installed on your RAV4. I would start by removing the trailer connector and checking each wiring connector to make sure a pin was not bent of broken when installing the harness, causing a short. Next, without the trailer connected, test the wires going into the converter on both sides with a circuit tester to see if power is going into the converter properly with each signal activated and the tail lights on, and coming...
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  • How to Re-Attach Rear Tail Panel on Solid Fold 2.0 for 2016 Tacoma
  • Thank you for the photos! From what I can tell, it doesn't look like any parts are actually broken, damaged, or missing on your Extang Solid Fold 2.0 Hard Tonneau Cover # EX83835 (2016 Toyota Tacoma 6 foot bed). So all you'd need to do is remove the T20 torx screw from the side of the tail hinge end cap # EX31830020. With the tail panel at a 45 degree angle, slide the tail panel # EX83835-62C and hinge EX83835-64 back together and re-install the end caps. Only hand tighten the screw to...
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  • Troubleshooting T-One Tee Connectors Not Fitting a 2016 Toyota Sienna
  • Thank you for the photos! The T-One Vehicle Wiring Harness # 118498 you purchased is for a 2016 Toyota Sienna SE, but the connectors you have in your photos look like you have a non-SE model so you'll need the Curt T-Connector Vehicle Wiring Harness # C56261 instead. If you look at the connector photos for the Curt wiring they seem to match with the photos you sent in. I'm also linking an installation video on a 2016 Sienna (non-SE) for you to check out.
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  • No Trailer Connection on Tekonsha P3 Brake Controller 90195 on a 2000 Toyota Tundra
  • I would start by inspecting the connector on your trailer and the vehicle to make sure there is not corrosion in the connector which could be causing a bad or weak connection. If there is corrosion in the trailer side connector, you would need to replace it with 7-way Connector, part # A7WCB. For the replacement vehicle side connector, you would need Adapter 4 Pole to 7 Pole, part # 30717. For future use, I would recommend using Dielectric Grease for Electrical Connectors, part # 11755,...
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  • Right Brake Light and Turn Signal Not Working on Trailer Towed by a 2007 Toyota RAV4
  • There is some testing you can do on the wiring harness for your 2007 Toyota RAV4. First, make sure that the converter box ground connection is intact and there is no corrosion. You can also try moving the ground. To test the converter, use your meter to test the wires going into the converter. If all of the signals are coming through as they should, then you can move on to the next step. If they are not, that indicates an issue on the vehicle that will need to be addressed. But if the...
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  • The Trailer Brakes are Weak When Cold and Harsh When Warm Using a Tekonsha Prodigy P3
  • I spoke to my contact at Tekonsha about the problems you are experiencing with your Tekonsha Prodigy P3 Trailer Brake Controller part # 90195. They speculated that the initial drive test was not performed with the trailer brakes warmed up. This would cause the brakes to feel weak when cold and then aggressive as they warm. I recommend re-performing the drive test when the brakes on the trailer have been properly warmed. You can see the instructions to complete the above process on page...
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  • Trailer Brakes Not Activating on 2019 Mini Winnie with P2 # 90885 Installed on a 2005 Land Cruiser
  • If you aren't experiencing any braking action on either trailer then that means the signal from the Prodigy P2 # 90885 is lost somewhere either on your 2005 Toyota Land Cruiser or your 2019 Mini Winnie. Since the Winnebago is brand new I suspect that the problem is on the tow vehicle side. Start off by testing the pin in the 5 o'clock position of your 7-Way connector with a circuit tester like part # PTW2992. If you don't have a 7-Way or you don't see that a signal is sending then that...
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