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'22 Seltos SX Turbo // Snow White Pearl
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Discussion Starter · #1 ·
Maybe this has been covered before, but here’s my experience with swapping the original incandescent turn signal bulbs over to LEDs.

Overall, my main concerns with doing this were:
A. to Avoid “hyper flash” that commonly happens when replacing incandescent with LED.​
B. Leave factory wiring intact so warranty isn’t affected when it comes to electrical systems.​

According to the owner’s manual, the bulb type is a P21 which is essentially an old school number 1156. I work in a dealership parts department, so it’s old school to me, anyway. 😉 I searched Amazon & eBay in my spare time and found the following:

BOODLIED 20Watts No Hyper Flash BA15S LED Bulbs 66-EX 2016 SMD Chips with Lens Projector 1156 1141 1003 1073 7506 LED Lamps For Reverse Brake Turn Signal Lights.Amber/Yellow.2-Pack. (BA15S-W) Amazon.com: BOODLIED 20Watts No Hyper Flash BA15S LED Bulbs 66-EX 2016 SMD Chips with Lens Projector 1156 1141 1003 1073 7506 LED Lamps For Reverse Brake Turn Signal Lights.Amber/Yellow.2-Pack. (BA15S-W): Automotive

These are absolutely perfect! No hyper flash and no modifications needed to the vehicle wiring. Simply replace the original bulbs and they just work! They’re bright, too!

When removing the tail light assembly, remove the two screws that are exposed when you open the lift gate, then you have to get a grip on the assembly and give it a good pull straight back. It’s held in by a clip at the front corner of the assembly and it was pretty tight, but it came out. Be careful not to pull too far so don’t yank the wiring too much! I almost did!

If you do it - or have already - let me know!
 

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Registered User
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Maybe this has been covered before, but here’s my experience with swapping the original incandescent turn signal bulbs over to LEDs.

Overall, my main concerns with doing this were:
A. to Avoid “hyper flash” that commonly happens when replacing incandescent with LED.​
B. Leave factory wiring intact so warranty isn’t affected when it comes to electrical systems.​

According to the owner’s manual, the bulb type is a P21 which is essentially an old school number 1156. I work in a dealership parts department, so it’s old school to me, anyway. 😉 I searched Amazon & eBay in my spare time and found the following:

BOODLIED 20Watts No Hyper Flash BA15S LED Bulbs 66-EX 2016 SMD Chips with Lens Projector 1156 1141 1003 1073 7506 LED Lamps For Reverse Brake Turn Signal Lights.Amber/Yellow.2-Pack. (BA15S-W) Amazon.com: BOODLIED 20Watts No Hyper Flash BA15S LED Bulbs 66-EX 2016 SMD Chips with Lens Projector 1156 1141 1003 1073 7506 LED Lamps For Reverse Brake Turn Signal Lights.Amber/Yellow.2-Pack. (BA15S-W): Automotive

These are absolutely perfect! No hyper flash and no modifications needed to the vehicle wiring. Simply replace the original bulbs and they just work! They’re bright, too!

When removing the tail light assembly, remove the two screws that are exposed when you open the lift gate, then you have to get a grip on the assembly and give it a good pull straight back. It’s held in by a clip at the front corner of the assembly and it was pretty tight, but it came out. Be careful not to pull too far so don’t yank the wiring too much! I almost did!

If you do it - or have already - let me know!
Isn’t P21 only 5 watts? I searched for “P21 equivalent LED bulb”, it gives me 1157.
 

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Registered User
'22 Seltos SX Turbo // Snow White Pearl
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33 Posts
Discussion Starter · #6 ·

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Registered User
'22 Seltos SX Turbo // Snow White Pearl
Joined
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33 Posts
Discussion Starter · #7 ·
Isn’t P21 only 5 watts? I searched for “P21 equivalent LED bulb”, it gives me 1157.
P21 is shown in our manuals as drawing 21 watts. Page screenshot attached.

P21 is also roughly equal to an old school 1156 bulb. The 1157 is a dual filament used where a constant and an intermittent circuit are needed. Such as a tail lamp plus brake/turn signal in one bulb. Since this is a single purpose bulb, it’s an 1156 “style” unit. Sorry for getting wordy. I’ve been an automotive parts person by trade for many years, so I’ve dealt with this stuff a lot.

Since the body control module usually controls turn signals in modern vehicles, I did a lot of research to match up the correct wattage so the BCM wouldn’t get “confused” by putting the wrong bulb in and it drawing the wrong amount of power.

Mine’s still working perfectly and I’ve even upgraded the reverse and license lamps to LED as well.

Have a great day!
 

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This didn’t work in my SXT. I had to return it to Amazon. After two flashes, the system cuts power to the circuit. I think my SXT knows that it’s the wrong bulb!
 

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'22 Seltos SX Turbo // Snow White Pearl
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Discussion Starter · #9 ·
This didn’t work in my SXT. I had to return it to Amazon. After two flashes, the system cuts power to the circuit. I think my SXT knows that it’s the wrong bulb!
That’s really strange! Sorry it didn’t work.

Those bulbs have roughly the same amp draw as the standard incandescent ones, so I’m really surprised. May have just gotten a bad set. Either way, sorry you have to go through that hassle.
 

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That’s really strange! Sorry it didn’t work.

Those bulbs have roughly the same amp draw as the standard incandescent ones, so I’m really surprised. May have just gotten a bad set. Either way, sorry you have to go through that hassle.
I guess the set that I got weren’t of the same current draw as the OEM bulbs.. One did not turn on at all so I had to test it right at the battery terminal and it lit there. I wasn’t able to do more tests to the bulbs because I figured I’d just be wasting my time diagnosing it. I was sure that the computer is precise in its circuit measurement.
 
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