Autopapyrus · Hyundai Santa Fe
https://autopapyrus.com/guides/hyundai/santa-fe/replacing-the-rear-turn-signal-bulb/

Compiled automatically from service literature and owner experience. Specs are for the typical configuration — check them against your exact car before you start.

Replacing the Rear Turn Signal Bulb

On a Santa Fe TM (Hyundai Santa Fe) with a conventional bulb in the rear turn signal, the bulb is replaced through the service opening in the side trim of the cargo area, without removing the tail light itself. If your trim level has an LED turn signal, there is no separate bulb: the LED module or the complete tail light assembly is replaced instead.

Difficulty: Easy Time: 10-20 minutes Steps: 9

Part

№	Part
01	PY21W amber turn signal bulb, BAU15s base, 12 V, 21 Wfor tail light with a conventional bulb

Tools

Plastic pry tool or a flat screwdriver wrapped in cloth (for removing the trim access cover)
clean gloves or a cloth

There's a full repair manual for this car Every system, wiring diagrams and torque specs — not just this job. Haynes and 6 more. See manuals →

Step by step

9 steps

Turn off the engine, switch off all lights, and open the tailgate.
Determine which bulb is out: rapid flashing of the turn signal indicator on the instrument cluster usually means a burned-out bulb on that side. If there is an LED section next to the bulb, check whether the entire turn signal section is dark (this indicates an LED module failure rather than a bulb failure).
In the cargo area on the side of the faulty tail light, find the access panel or removable cover for the tail lights on the side trim. Carefully pry it off with the pry tool. If there is no access panel, pull back the edges of the trim near the tail light and move it aside without breaking the clips.
Locate the bulb sockets on the back of the tail light. The turn signal socket is the one with the amber bulb. You can also identify it by its position: it is located in the outer part of the tail light.
Grip the socket, turn it about a quarter turn counterclockwise, and pull it out of the tail light together with the bulb.
The bulb sits in the socket with a bayonet fitting: push it in slightly, turn it counterclockwise, and pull it out. Inspect the socket and contacts: if there are signs of melting or corrosion, clean them or replace the socket.
Insert the new PY21W (amber) bulb. Touch the bulb glass only through a cloth or while wearing clean gloves: fingerprints shorten the bulb's life.
Before reinstalling the tail light, check operation: turn on the ignition and the hazard lights or turn signal. The bulb should flash at a normal rate, without hyperflashing.
Insert the socket into the tail light and turn it clockwise until it locks. Reinstall the access panel or trim and close the tailgate.

Common mistakes and warnings

Install only a bulb of the correct type and wattage: a lower-wattage bulb or an LED "replacement" without a resistor causes hyperflashing (bulb-failure warning)
If the bulb does not light after replacement, check the turn signal circuit fuse and the socket contacts
For LED tail lights, replacing a single bulb is not possible