Mercedes S420 Turn Signal Bulb Parts
Showing 13 out of 13 part(s) found in our catalog.
Brand
Keyword
Subcategory
Mon-Fri 8-4 MST/PST (Arizona Time)
The average price of a Mercedes S420 turn signal bulb is between $1.09 and $7.89.
What Is The Correct Replacement Bulb For The Mercedes S420 Turn Signal?
If you’re replacing the Mercedes S420 turn signal bulb, you’ll want to start by checking which bulb fits your car. For most years, the front and rear indicators usually take a 3157NA or 1157NA amber bulb, but this can vary depending on the model year. Always double-check your owner’s manual or pull your old bulb out to match the number. Using the wrong bulb size may prevent it from fitting or working correctly, and getting the wattage wrong might cause the signal to be too dim or trigger warning lights, so it pays to double-check before buying.
How Do I Access And Replace A Mercedes S420 Turn Signal Bulb?
Once you’ve got the right Mercedes S420 turn signal bulb, swapping it out is pretty straightforward. For the front, pop the hood and find the back of the headlight assembly—there’s usually a cap or locking ring you turn to get to the bulb. For the rear, just open the trunk, peel back the liner or pop off the cover panel, and you should see the bulb socket right on the back of the tail light. Twist out the socket, pull out the old bulb, push in the new one, and then put everything back together. Give the new signal a quick test before closing things up.
What Should I Do If The New Bulb Doesn’t Work?
Every now and then, you might replace your Mercedes S420 turn signal bulb only to find it’s not working or it blinks too quickly. First, make sure the new bulb is fully seated—it might need a firm push or twist. If it still doesn’t work, check the socket for any corrosion or dirt. Next, take a look at the relevant fuse in your fuse box; if it’s blown, swap it out for one with the same rating. A rapid blink (hyperflash) usually means there’s another bad bulb in the system or you’ve used the wrong one somewhere, so it’s worth checking all the bulbs.
Can I Use LED Bulbs Instead Of Regular Incandescent Bulbs?
Switching out your Mercedes S420 turn signal bulb for an LED is a popular choice, since LEDs last longer and are brighter. But there’s a catch: LEDs draw less power, so if you install one, you might get fast blinking or even a warning light. This can be fixed by adding a load resistor or sometimes using an LED-friendly flasher relay. Make sure to pick a bulb that fits your socket and check if your car’s electronics can handle the swap without any issues.
How Can I Tell If My Turn Signal Bulb Needs Replacing?
Wondering if your Mercedes S420 turn signal bulb is on its way out? One of the first things you’ll notice is a rapid-blinking indicator on your dash, or maybe the turn signal just won’t light up on one side. Sometimes, the bulb works but just looks dimmer than normal. Take a look at your car’s exterior lights and see if one side isn’t flashing. You might also get a warning message on your dash letting you know something’s up. When in doubt, check all the bulbs—front and back—to make sure everything’s working like it should.
Looking For An Affordable Mercedes S420 Turn Signal Bulb?
AutohausAZ takes the hassle out of finding the right Mercedes S420 turn signal bulb at a good price. With better deals than the dealership and quick shipping, you’ll have what you need in no time. If you’re not sure which bulb to order, our return policy means you won’t get stuck with the wrong part. We’re here to help you keep your Mercedes running safely without overspending.
