Hey guys, I'm having some major issues here. About 6 months ago, I noticed my right DRL would turn off when I turned on my headlights. I thought it was going out, so I replaced it. Wrong, it kept doing it after the replacement so I ignored it thinking it was a problem I didn't want to deal with. A few months ago, my turn signals slowly stopped working. I naturally thought it was the hazard switch so I finally replaced it two weeks ago. Here's where the real problems began. Initially, the turn signals worked after the swap out, but the BRAKE lights didn't work any longer! (although the middle row strip brake light still works). Now, the front left turn signal no longer works. Additionally, the DRL's work sometimes, sometimes they don't. It's killing me! I guess what I'm asking is whether this is a problem with the hazard switch or a problem with the multifunction switch? I'm going to replace the hazard switch (again) but I have a bad feeling it may actually be the multifunction switch. Anybody experience problems like this with the DRL's and the brake lights? Any help or insight would be greatly appreciated.

 

The DRLs are supposed to turn off when you turn on the headlights. Not sure why only one goes off for you but there is a reason.

It certainly seems like the Multifunction switch is a problem.

The 3rd brake light power does NOT go thru the Hazard switch and MF switch.

One quick test I have people do is see if they can get the Hazards to flash all 4 rear brake lights. Pay no attention to the front lights. Then put the turn signal to the left and right. If in either case one side of the other stops flashing, it is the MF switch. Of course if the MF switch is intermittent then this may not prove one or the other is the issue. However, you have replaced the Hazard switch already.

I have resolved numerous similar issues. If you PM me with your phone number I can discuss with you.

 

Dadaroo, thanks for your response. I tried what you suggested. The hazards in all four rear lights worked, and neither side stopped flashing when I applied the turn signals. This might simply be a case of me jacking up the hazard switch when I swapped it out. And the DRL, well, who knows. The sockets looked a little burned (not melted) when I replaced the bulbs so I bought new sockets. I'm going to replace them when I do the hazard switch again. Maybe that will take care of that. It's never that easy though.

I'm going to try your suggestion multiple times today to see if the result stays consistent. I will report back.

 

If you pull the Hazard switch out, DO NOT reinsert it until you resolve these issues. It does not have to be in the dash to work. You could have a damaged pin or connector.

Here is what I did when I replaced mine:

http://forums.corvetteforum.com/c5-t...elocation.html

Just understand, the 4 brake lights/turn signals go THRU the MF switch.

I can help you fix the DRL issue but let's focus on one problem at a time. Brake lights and turn signal rate higher priority.

 

The outside brake lights not working while the 3rd brake light works points to the hazard switch. There is a contact inside used to switch the outside brake lights to the flasher when the hazard switch is pressed to the hazard position. It's likely not connecting the brake lights back to the brake switch when you turn-off the hazard. The multi-function switch failing would most likely cause a single side to not work right.

The bulb in the corner housing is a dual filament bulb. The DRL and signals use the large high power filament in the bulb. The headlights use the small low powered filament. So, that problem is due to the small filament being bad or not getting power. Could be the socket contact for that filament or a wiring issue. Since the socket looked bad take anther look at it first.

 

Guys, I replaced the hazard switch again yesterday (this time with an AC Delco part). The brake lights now work, thank God. However, I'm still having issues with the DRL's. I've got to believe this is an issue with the sockets. I'm taking it in to my mechanic in a week or so to replace the steering wheel position sensor, and at that time he'll also be replacing the DRL sockets. We'll see what comes of all this....


QUOTE=lionelhutz;1587289156]The outside brake lights not working while the 3rd brake light works points to the hazard switch. There is a contact inside used to switch the outside brake lights to the flasher when the hazard switch is pressed to the hazard position. It's likely not connecting the brake lights back to the brake switch when you turn-off the hazard. The multi-function switch failing would most likely cause a single side to not work right.

The bulb in the corner housing is a dual filament bulb. The DRL and signals use the large high power filament in the bulb. The headlights use the small low powered filament. So, that problem is due to the small filament being bad or not getting power. Could be the socket contact for that filament or a wiring issue. Since the socket looked bad take anther look at it first.[/QUOTE]