Question: Both of my rear lights aren't working. When and where were these 91 victories? It also works fine sometimes. It helps you identify not only wires and components and their related connections, but how to access, troubleshoot and replace components, as necessary. I have a 2011 Toyota tundra and not four-wheel-drive will not engage when I looked underneath the truck I noticed a ground wire that was hanging from the transmission. If they come on but don't flash, most likely the flasher unit is bad. I've changed all the bulbs and checked every fuse except the big ones. If necessary, make the following circuit checks: Identify the wires in your turn signal switch using your repair manual. That the turn signal switch itself is not bad, since without this voltage... it won't work. Check the relay first. Find the left (driver's) side by pulling open the hinged door. This guide is designed to help you make your repair faster, and get back on the road safer. Turn the ignition switch to the On position but do not start the engine. If you have the common two-probe test light, the test I’d do first is connect one probe to battery ground, and the other probe to whatever connects to the brown wire of the right front turn signal socket. When he accidentally bumped the ignition key the test like flashed. One wire from the negative battery terminal to the motorcycle turn signal ground (usually black) wire. Why would ONLY the left rear turn signal not flash. You can also check these grounds using your DMM. Answer: Most likely the problem is within the switch, the canceling mechanism might have failed. What should l do? If it's not coming on, use a test light and make sure you got a good ground and power through the light socket. Symptoms of a bad engine ground may include: And the list goes on. Have your assistant crank the engine while you take a voltage drop reading. Still, consult the repair manual for your particular vehicle make and model. Identify the colors of the wires that connect to the flasher unit. For example, you signal traffic your intention to turn left or right, but after cornering, the turn signal continues to flash. Gain access to the light socket you need to test: You can repeat the previous test. Now my right signal turns on my hazards and my hazards are right signal. Test alternator and it's fine, test the battery and it's fine but a guy said might be battery because it's almost 3 years old. My head lights and brake lights are on hazard lights work. Repairing the connection is a project that is well within the range of the do-it-yourselfer. Are you a truck enthusiast? Another possibility is the alternator isn’t working properly. Make sure they are clean and well connected. Answer: There seems to be a mechanical problem with the turn signal switch. This other post may help: My turn signal, horn, windows, and radio dont work what could be the problem. For cleaning, try electrical contact cleaner. But a bad connection in the circuit or relay can produce the same effect. Check the necessary things. One of the all-time greats of Formula 1 also has one of the most career wins. I had many responses and have collected them in the pages that follow. To locate the problem, continue with the next steps. You can get a relatively inexpensive copy through Amazon. A bad electrical ground may affect one or more electrical systems because it forces current to search for other easy paths back to battery ground. First, locate the flasher; you may find the unit under the dashboard near the steering column, or near the battery in a junction box or 'power center.' Also, check for an open (most likely) or a short. Fix grounds as necessary. Also, no power to window switch. All indications of a burned out left rear turn signal bulb (front bulb still works, now at faster rate, dash indicator is also at faster rate, right turn signal system works completely fine). Question: My problem is the opposite of number 3 in this article. If you don't have the manual for your particular model, your local library may have a copy, in case you need it for reference. What could be the problem? They may have a copy for your specific model. Let's find out. Unless both rear bulbs have lost their ground signal simultaneously you should easily spot which one side is the problem area. There was a time when the dashboard lights flashed occasionally, so I do not think that it is the light bulbs in the dashboard. left rear indicator light not working despite bulb changed. Refer to section. Also, there could be a bad ground for the turn signals. There are downsides, however, and this article lists the seven main disadvantages. These other posts may help: https://axleaddict.com/auto-repair/How-to-find-a-C... https://axleaddict.com/auto-repair/How-to-Find-a-C... My hazards won't turn off. I have swapped the flasher relay with a working one. A week ago I bought a restored 65 Pontiac GTO. Answer: Usually the problem is a faulty flasher relay. Haynes manuals are popular and practical maintenance and troubleshooting guides. When I use the turn signals, they rapidly flash on the dash but do not indicate on the front of the car. If necessary, check the wires that connect to the socket. Flasher unit ticks rapidly but none of the indicator bulbs light up. Make sure both filaments are in good condition, and that the bulb glass is not darkened. Check the common wire that connects to both rear lights; it could be loose, dirty or damaged. You should get a voltage drop of 0.2 volts or less. Inspect the wiring harness or terminals for the rear section of the circuit. Clean, repair or replace transmission grounds as necessary. Connect the ground and check with a scan tool, if necessary, for circuitry issues. Hope this helps. Question: Why are my turn signal indicators not clicking? Set your voltmeter to a flow volt setting on the DC Volt scale. When the signal is on the pulse interrupts the ground so the side marker flashes . Question: Why does my my left turn signal come on when I push it to go right? When using the turn signals from the steering wheel, only the right side of the car works. The automatic doors act up, the ac acts up and the other day my speedometer and digital displays wouldn’t work along with the power doors, windows and lights. Checking a Light Bulb Socket for Ground and Power, II. Or choose the autorange function, depending on your particular multimeter features. I attached the grounds to each of two mounting screws for the voltage regulator (maybe that’s okay?). I have replaced the turn signal switch twice. You might want to have a shop confirm the problem and, if necessary, replace it. Question: My left indicator will flash one time and then will not flash anymore (both back and front). A test light or voltmeter and, probably the wiring diagram for your model can help you here. You may need a test light and the wiring diagram for your model to check the circuit. So the next best choice is to test the suspected flasher while installed in the vehicle. All bulbs & bulb contacts good. The bulbs, switch, and fuses are new. Question: I have a 2012 diesel Hilux. Answer: First, make sure the fuse for the hazard lights is OK. Probably a chat with these guys could be more productive. There seems to be bad or loose ground. Photo courtesy of Hans Haase on Wikipedia. I'd throw in a new relay to start with and if that doesn't fix it then check the light assembly grounds. Also, check the ground. Dan Ferrell (author) on December 18, 2019: There might be a loose connection; there problem could be in the switch (if all turn lights fail sometime) or a specific part of the circuit (if only two or one light doesn't work all the time). Disconnect the turn signal and see if the front one works. Answer: There could be a problem with the power feed line of the circuit. I changed them to see if that was the problem but wasn't. Without a set of good tires, your car will not run smoothly and your engine will use more gas than it should. Question: Why won't my turn signals work? However, if the flasher unit is working fine, check the fuse. Even more, bad engine grounds can also cause damage. Replace the switch. Dim or Flickering Lights You headlights will do the same thing as the starter, but will likely dim instead of … A bad brake light ground connection will result in the brake lights not working, or power crossfeeding through the tail-light circuit, preventing both tail and brake lights froms working at the same time. Check for a problem in a light control module, or headlight (switch) connector or circuit. Any idea what the problem count be, or why it doesn't fail 24/7. I have also taken to the garage to try to reset the fault. Answer: Some modern vehicle use a solid state relay, and the computer or some other relay may imitate a clicking sound which you hear through the speakers. The test light should flash. At this point you are seeing the entire ground point pulled up above the hood. Whenever you see signs of electrical failures, check your engine grounds. Hope this helps. Check from the starter solenoid relay to the solenoid, and make sure the ignition switch connections are still good, and the switch itself is good. You may want to check the ground wires and connections. There could be a problem with the switch itself. My blinkers only work if my hazard button is pushed down on a 2004 Ford Expedition why is that. See what was the most effective! Which cars have dominated world speed records since 1980? Question: Both my indicators keep flashing and I can't turn them off. It isn’t the bulb and the contacts were bent out last time to help. Question: My hazard lights are working but the indicators stay on. Use a test light to check the power wire and ground at the light socket. If it still doesn’t work, you can also check to be sure if it’s a connection problem and not the wirin… Too much resistance will cause the socket and lamp to overheat. If only one of the right lights isn't working check the socket and connections; if both lights on the right side, there could be a problem in the circuit. When you turn the turn signals on, right or left, the front work fine but the rear both flash. You may need to consult the diagram for your model and see where they both get power (common connection). You may be dealing with bad bulbs, a bad flasher relay, a faulty turn signal switch, or a bad wire or connector between the flasher unit and the turn signal switch. Can you see the battery light come on, on the dashboard. Almost burned or melted on the dash if they are okay, probably the power wire leading to light. 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