Rear Turn Signal Help
Thread Starter
4th Gear
Joined: Jan 2023
Posts: 4
Likes: 0
Rear Turn Signal Help
I know this has been talked about quite a bit but I’m having an issue I can’t fully comprehend.
Both front turn signals and drls are working (passenger hyper flash). Both rear brake lights are working, driver rear turn signal is working. Passenger rear turn signal is not working. Hazards work on all lights however with no hyper flash. I’ve put new bulbs in and the sockets seem fine visually, and they work for the other lights so I imagine that’s not a problem.
Reading previous threads it seems like it must be the hazard switch or MFS. Pressing the hazard switch repeatedly does nothing and I would think the brake lights would be out if it was that one. So I’m thinking MFS. I don’t know why the front bulb is working but hyper flashing if that was the case though, and I also read someone say that hyper flash is always a bad bulb or socket, which it doesn’t seem to be in this case (all brake lights and hazards work as intended).
Is there a way to test these switches for my problem? I don’t want to blindly through parts and time at the car if I don’t have to. I also don’t want to pay someone to do the same thing. Thanks!
Both front turn signals and drls are working (passenger hyper flash). Both rear brake lights are working, driver rear turn signal is working. Passenger rear turn signal is not working. Hazards work on all lights however with no hyper flash. I’ve put new bulbs in and the sockets seem fine visually, and they work for the other lights so I imagine that’s not a problem.
Reading previous threads it seems like it must be the hazard switch or MFS. Pressing the hazard switch repeatedly does nothing and I would think the brake lights would be out if it was that one. So I’m thinking MFS. I don’t know why the front bulb is working but hyper flashing if that was the case though, and I also read someone say that hyper flash is always a bad bulb or socket, which it doesn’t seem to be in this case (all brake lights and hazards work as intended).
Is there a way to test these switches for my problem? I don’t want to blindly through parts and time at the car if I don’t have to. I also don’t want to pay someone to do the same thing. Thanks!
Safety Car
Joined: Mar 2017
Posts: 3,774
Likes: 940
From: Orlando Florida
Several of the existing threads have the relevant wiring diagrams attached to help you follow the current paths. My C5 experience with both brake lights and turn signals has led to the hazard switch, though I do have a spare multifunction switch in the cabinet. In non-C5 experience tail light issues have been poor grounding almost every time.
Tech Contributor
Joined: Jan 2007
Posts: 19,511
Likes: 1,186
From: Dyer, IN
I know this has been talked about quite a bit but I’m having an issue I can’t fully comprehend.
Both front turn signals and drls are working (passenger hyper flash). Both rear brake lights are working, driver rear turn signal is working. Passenger rear turn signal is not working. Hazards work on all lights however with no hyper flash. I’ve put new bulbs in and the sockets seem fine visually, and they work for the other lights so I imagine that’s not a problem.
Reading previous threads it seems like it must be the hazard switch or MFS. Pressing the hazard switch repeatedly does nothing and I would think the brake lights would be out if it was that one. So I’m thinking MFS. I don’t know why the front bulb is working but hyper flashing if that was the case though, and I also read someone say that hyper flash is always a bad bulb or socket, which it doesn’t seem to be in this case (all brake lights and hazards work as intended).
Is there a way to test these switches for my problem? I don’t want to blindly through parts and time at the car if I don’t have to. I also don’t want to pay someone to do the same thing. Thanks!
Both front turn signals and drls are working (passenger hyper flash). Both rear brake lights are working, driver rear turn signal is working. Passenger rear turn signal is not working. Hazards work on all lights however with no hyper flash. I’ve put new bulbs in and the sockets seem fine visually, and they work for the other lights so I imagine that’s not a problem.
Reading previous threads it seems like it must be the hazard switch or MFS. Pressing the hazard switch repeatedly does nothing and I would think the brake lights would be out if it was that one. So I’m thinking MFS. I don’t know why the front bulb is working but hyper flashing if that was the case though, and I also read someone say that hyper flash is always a bad bulb or socket, which it doesn’t seem to be in this case (all brake lights and hazards work as intended).
Is there a way to test these switches for my problem? I don’t want to blindly through parts and time at the car if I don’t have to. I also don’t want to pay someone to do the same thing. Thanks!
Advanced
Joined: Apr 2024
Posts: 66
Likes: 18
From: Amarillo, TX
I know this has been talked about quite a bit but I’m having an issue I can’t fully comprehend.
Both front turn signals and drls are working (passenger hyper flash). Both rear brake lights are working, driver rear turn signal is working. Passenger rear turn signal is not working. Hazards work on all lights however with no hyper flash. I’ve put new bulbs in and the sockets seem fine visually, and they work for the other lights so I imagine that’s not a problem.
Reading previous threads it seems like it must be the hazard switch or MFS. Pressing the hazard switch repeatedly does nothing and I would think the brake lights would be out if it was that one. So I’m thinking MFS. I don’t know why the front bulb is working but hyper flashing if that was the case though, and I also read someone say that hyper flash is always a bad bulb or socket, which it doesn’t seem to be in this case (all brake lights and hazards work as intended).
Is there a way to test these switches for my problem? I don’t want to blindly through parts and time at the car if I don’t have to. I also don’t want to pay someone to do the same thing. Thanks!
Both front turn signals and drls are working (passenger hyper flash). Both rear brake lights are working, driver rear turn signal is working. Passenger rear turn signal is not working. Hazards work on all lights however with no hyper flash. I’ve put new bulbs in and the sockets seem fine visually, and they work for the other lights so I imagine that’s not a problem.
Reading previous threads it seems like it must be the hazard switch or MFS. Pressing the hazard switch repeatedly does nothing and I would think the brake lights would be out if it was that one. So I’m thinking MFS. I don’t know why the front bulb is working but hyper flashing if that was the case though, and I also read someone say that hyper flash is always a bad bulb or socket, which it doesn’t seem to be in this case (all brake lights and hazards work as intended).
Is there a way to test these switches for my problem? I don’t want to blindly through parts and time at the car if I don’t have to. I also don’t want to pay someone to do the same thing. Thanks!
Tony
Thread Starter
4th Gear
Joined: Jan 2023
Posts: 4
Likes: 0
Thread Starter
4th Gear
Joined: Jan 2023
Posts: 4
Likes: 0
As for wires, the same question applies. Thanks for the help! I will report back with results.
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Thread Starter
4th Gear
Joined: Jan 2023
Posts: 4
Likes: 0
Sorry I haven’t been able to do my diagnostics yet as I’ve been busy. Since they use the same filament that would mean my sockets are fine correct since brake lights and hazards work fine?
Advanced
Joined: Dec 2024
Posts: 51
Likes: 24
From: Lancaster, KY
.........Both front turn signals and drls are working (passenger hyper flash). Both rear brake lights are working, driver rear turn signal is working. Passenger rear turn signal is not working. Hazards work on all lights however with no hyper flash. I’ve put new bulbs in and the sockets seem fine visually, and they work for the other lights so I imagine that’s not a problem.........
