Mercedes SLK350 Starter Relay Parts

Showing 3 out of 3 part(s) found in our catalog.

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Mercedes SLK350
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Electrical, Lighting and Body
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Starter Relay
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Please verify appearance, connections, and part number on existing relay prior to ordering.
2005, 2006, 2007, 2008, 2009, 2010, 2011 Mercedes SLK350
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$9.59
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$9.99
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$21.00
2005, 2006 Mercedes SLK350
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Leaves closest warehouse today if ordered before 2 PM MST.
$3.49
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$3.64
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$21.00
2005-2016 Mercedes SLK350
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$12.59
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$13.11
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$19.50

The average cost of a Mercedes SLK350 starter relay is between $3.49 and $12.59.

Where Is The Mercedes SLK350 Starter Relay Located?

Finding the Mercedes SLK350 starter relay isn't always a breeze. Most of the time, you’re looking at the fuse box tucked under the hood, near the driver’s side fender. Flip the cover off, and you’ll see a small chart showing which relay does what. Still, it pays to cross-check with your owner's manual, since setups can change a bit from year to year. Relays tend to look similar, and grabbing the wrong one can cause headaches. Pull each piece slowly and keep an eye on how things slide out. If something feels stuck, stop and figure out why. Before even thinking of poking around, disconnect your battery. That single step is worth its weight in peace of mind.

What Are The Symptoms Of A Bad Mercedes SLK350 Starter Relay?

When the starter relay starts acting up in your SLK350, you’ll notice strange things. Sometimes nothing happens at all — key in, lights on, but not even a cough from the engine. Maybe you hear a sharp click every time you turn the key, or starting the car becomes a game of chance. Some owners find it works like normal one day, then acts dead the next. Dashboard lights might flicker or dim a bit when you try to start. If jump-starting or charging the battery does nothing, suspicion falls on the relay. An easy check? Swap it with a matching relay if one’s handy, or test with a multimeter for peace of mind.

How Do You Test A Mercedes SLK350 Starter Relay?

Testing a starter relay in a Mercedes SLK350 is pretty straight-forward. Remove the relay from the fuse box so you have it in hand. Grab a multimeter and check for continuity between specific pins—no signal means trouble. If you’ve got some wire and a 12-volt source, you can power the relay coil directly. A healthy relay will click when live current hits it. If you hear nothing or the multimeter stays silent, time for a new relay. Swapping in a relay from another slot can also point to a fault fast. Make sure you check which relay goes where by referencing your diagram, so nothing ends up out of place.

Can The Starter Relay Fail Intermittently On A Mercedes SLK350?

Intermittent problems with the starter relay aren’t rare on the SLK350. Your car might fire up five days straight, then suddenly refuse to start, only to work fine again later. Heat, cold, or even a bit of moisture from the weather can sometimes tip a weak relay over the edge. Inside the relay, worn contacts or slight corrosion are the usual suspects. Because these bits aren’t always broken, troubleshooting takes patience—sometimes it passes every test outside of the car, but buries you in problems when mounted. If this pattern keeps up, it’s usually best to swap in a new relay and get ahead of bigger problems.

Is Replacing The Mercedes SLK350 Starter Relay A DIY Job?

Most SLK owners with a basic toolbox and a gentle touch can change out the starter relay themselves. Open the hood, pop off the fuse box cover, and pull out the old relay. The new piece clicks into the empty slot—just pay attention to how things line up. Like most quick jobs, trouble creeps in by skipping the small stuff, so always double-check you have the right relay. Disconnecting the battery at the start and reconnecting it at the end keeps you and the car out of trouble. No fancy gadgets needed—just patience, a little care, and maybe some good daylight.

Looking For The Best Starter Relay For Your Mercedes SLK350?

Here at AutohausAZ, we know how much your Mercedes matters. That’s why finding the right starter relay is more than just another purchase. We work to keep it simple and fast, with sharp pricing and a stock that covers pretty much every SLK350 out there. You order, we pack it up, and get it going fast—because no one wants a dead car sitting in the driveway. If something’s off or the fit isn’t right, our return process is smooth and you get help when you need it. Our shop is built for regular folks, not just car pros. The site’s easy to search, support is one click away, and we handle little details so you can get back on the road with less stress. That’s how we do business—making sure you feel good from first look to final install.