Mercedes 420SEL Turn Signal Relay Parts
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Based on industry averages you can expect to pay between $71.99 and $90.99 for a Mercedes 420SEL turn signal relay.
Where Is The Mercedes 420SEL Turn Signal Relay Located?
The Mercedes 420SEL turn signal relay sits in a spot that’s almost hidden at first glance. You’ll usually find it in the fuse box under the hood, toward the passenger side. Some years tuck it down inside the cabin, close to the driver’s left foot near the kick panel. Either way, you’ll need to remove a panel—sometimes a couple screws, sometimes just plastic fasteners. Once the cover’s off, you’ll see a handful of relays in a row. They aren’t marked clearly. If you’re stuck, turn the signals on and listen for the clicking sound, or pull the owner’s manual for the diagram. Chasing down the right relay takes a little patience but gets easier after you’ve seen the layout once.
How Can I Tell If The Turn Signal Relay Is Failing?
People notice the signs of a failing Mercedes 420SEL turn signal relay pretty quickly. You might get no turn signals at all, very quick flashes, or a signal stuck on steady. Sometimes there’s no clicking noise from the dash, or it’s louder than usual. It’s common for both sides to stop working if the relay goes. If you have access to another relay that matches, swapping it is a quick test. When signal trouble takes out other lights too, start thinking about wiring, but most of the time it’s just the relay at fault. Listen, swap, and watch the blinkers—it’s usually that simple.
Can I Replace The Turn Signal Relay Myself?
Replacing the Mercedes 420SEL turn signal relay is usually straightforward. Most people with basic tools can handle it at home. You’ll need a small screwdriver to get the cover off. After that, the relay pulls out by hand—no special techniques. Push the new one in, line up the pins, and you’re set. Make sure the ignition is off first, just to be safe. Some folks take photos before they start, to remember relay positions. Give it a quick test with the turn signals before putting everything back. Total time’s often around 20 minutes from start to finish.
What Type Of Relay Should I Use As A Replacement?
When it comes to the Mercedes 420SEL turn signal relay, many stick with OEM parts for peace of mind. Factory relays fit right and tend to last. Some aftermarket relays can work, but there’s a risk with fit or durability—some brands don’t hold up. Double check the part number, and look at the pin pattern before buying. A few minutes of research saves trouble later. Cheap relays may seem tempting, but they sometimes bring more problems with odd flashing or early failure. It’s worth paying for a solid, well-reviewed relay to avoid doing the job twice.
Could A Bad Turn Signal Relay Drain My Battery?
The Mercedes 420SEL turn signal relay won’t usually cause a battery drain on its own. It pulls power only when using blinkers or hazards. If one gets stuck, the signal lights could stay on after you turn the car off, and that will start to drain the battery. This isn’t common, but it can happen. If you ever come back to a car with flashing lights when it was parked, check the relay. In most cases, though, battery draw comes from a stuck dome light, trunk switch, or a different relay—rarely from the turn signal relay unless you see the signals refusing to shut off.
Why Choose AutohausAZ For Your Mercedes 420SEL Turn Signal Relay?
Picking up your Mercedes 420SEL turn signal relay from AutohausAZ keeps things easy and budget-friendly. You get parts that actually fit, prices that beat most local stores, and a smooth ordering process. If the part isn’t what you expected, returns are quick and no-fuss, so you’re not left with something you can’t use. Shipping moves fast—most orders leave the warehouse the same day, and you see updates right away. If you need help, there’s someone ready to answer the phone or email. No hidden fees, no hassle, just the right part shipped quickly to your door. With AutohausAZ, you skip the guesswork and get your Mercedes back on the road without spending your whole afternoon tracking down parts.
