Mercedes R320 Turn Signal Relay Parts

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Mercedes R320
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Electrical, Lighting and Body
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Turn Signal Relay
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Please verify appearance, connections, and part number on existing relay prior to ordering.
2007, 2008 Mercedes R320
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Leaves closest warehouse today if ordered before 2 PM MST.
$9.59
Reg
$9.99
List
$21.00
2007, 2008, 2009 Mercedes R320
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Leaves closest warehouse today if ordered before 2 PM MST.
$3.49
Reg
$3.64
List
$21.00

Mercedes R320 turn signal relay typically cost between $3.49 and $9.59.

Where Is The Turn Signal Relay Located In The Mercedes R320?

Locating the Mercedes R320 turn signal relay can be a bit of a scavenger hunt. Most owners will find it tucked away in the fuse box, usually down by your left knee under the dashboard, or up against the firewall in the engine bay on the passenger side. Getting to it isn’t tough, but it does call for removing a few covers or some dash trim. If you’re lost, the fuse diagram behind the fuse box lid or the owner’s manual can save the day. Always disconnect the battery before digging in around the relays.

How Do I Know If The Turn Signal Relay Has Failed On My Mercedes R320?

When the Mercedes R320 turn signal relay goes bad, your blinkers start acting up. Maybe they won’t flash, maybe they just stay on, or maybe they’re clicking twice as fast as usual. Sometimes the dash lights stop responding, and other times you just hear a steady ticking sound from under the dash with nothing happening outside. Before swapping out the relay, make sure bulbs and fuses are good. If you want to be sure, borrow an identical relay from another spot and see if that solves it. Relays don’t get fixed—they just get replaced.

What Type Of Replacement Relay Do I Need For The Mercedes R320?

The right Mercedes R320 turn signal relay has to match both the part number and the pin setup of your old one. Check for a string of numbers on the relay itself and use that as your reference, or take the piece in when you buy a new one. Sticking with Mercedes-branded relays is smart, but trusted aftermarket options work as long as all specs and pins line up. Wrong relays can lead to more electrical headaches, so always double-check your info—VIN lookups help if you’re unsure.

How Difficult Is It To Replace The Turn Signal Relay On The Mercedes R320?

Swapping the Mercedes R320 turn signal relay is straightforward as long as you have patience. Removing panels is the trickiest part; a trim tool or screwdriver usually does the trick. Once inside, it’s a simple pull-and-plug job. Push the new relay into place, snap the covers back, and test your signals. If access seems impossible or the area looks messy with wires, asking a pro never hurts.

What Can Cause The Mercedes R320 Turn Signal Relay To Fail?

Relay failure can sneak up for plenty of reasons. Years of use can wear out the relay’s insides. Leaks or moisture in the fuse box can corrode pins or even the relay case. If you’ve ever installed the wrong style bulb, that’s one more thing that can cause an early death for the relay. Occasional voltage spikes and poor wiring don’t help either. Regular cleaning, proper bulbs, and dry surroundings will give the new relay a better shot at lasting.

Looking For The Best Deal On A Mercedes R320 Turn Signal Relay?

If you want a fair price for your Mercedes R320 turn signal relay, a quick look at AutohausAZ is an easy move. You get solid discounts on quality brands, usually shipped out the same day. If you buy the wrong part, returns don’t turn into a hassle—just ship it back. Their support team answers your questions, not with scripts, but real help. Whether car repairs are old hat or it’s your first time, the process stays smooth. A good balance of fast shipping and low prices means less delay in getting back on the road.