gb7FRz26
Well-known member
- First Name
- Chris
- Joined
- Aug 23, 2021
- Threads
- 5
- Messages
- 118
- Reaction score
- 104
- Location
- North Texas
- Vehicles
- 2021 F150 XLT SuperCrew Short Bed, 2010 Prius
- Thread starter
- #1
According to the XLT owners manual, the taillight fluid level should be zero milliliters, which also happens to be zero ounces.
The water ingress to the taillight never looked too bad from the outside, despite the gif above. It was always 'just some condensation droplets'. Then this morning I got the fast blinker clicking when turning right. O'Reilly did not have the bulb, they were close though and spent plenty of time trying to find it. The up-to-2020 bulb won't fit the housing and has plastic tabs that prevent it from going into the socket completely.
The Ford part number for the halogen 2021+ F150 Taillights is JL3Z-13466-D and was $25 at the local Ford dealership, can be had for $10 online.
Rather than link places that sell the bulb, here's an easy Google search:
https://www.google.com/search?q=JL3Z-13466-D
<sidebar> I'd like to thank the Ford programmers that took the time to write the lines of code that makes the completely digital relay click noise and blinker light go into fast mode when a lamp is out. Externally, the blinker speed stays the same. But instead of a message on the dash, you get what car drivers are used to for the last hundred years, fast click, fast blink on the dash. The relay noise is just a recording on a speaker - you can tell because it stops when the chime is on and the lights are still blinking. Unlike Chrysler products I've driven, the sound is consistent and never skips a beat, like it's its own module or the process running to make the noise is running on a real-time OS. Makes zero difference practically speaking, just one of those interesting things to nerds like me. Every once in awhile in a CJDR product, the blinker would hesitate maybe 200 milliseconds and you'd go "Huh. CPU must have been thinking about something else."
Oh, also found out that behind the darker piece of red plastic, next to the white reverse light must be a microwave transceiver, because this happens when it's unplugged:
Confirmed all four blink/brake bulbs are the same dual filament part and interchangeable.
Closeup of a new OEM bulb from the local Ford parts department:
Also for fun, here's what my plug harness looked like before cleanup (still works):
Please note I don't know which trims have a different lamp assembly and the above info is for my '21 XLT. The Lariat / Platinum might have LED, perhaps. And hopefully is sealed better.
Now that it's all fixed, I think I'll go drill a little weep hole...
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