[Tony Margulis]

I recently purchased a used 2014 ED (still has about 10 months of factory warranty left) and every once in awhile it will make a loud click. It's very similar to a clicking problem we had a work recently with too many electronics on the same circuit. When the printer would come out of sleep mode to print, the UPS battery backup would click and sometimes the computer would surge. When we moved the printer to a different outlet that was on a different circuit breaker the clicking went away. The clicking in the smart seems to happen more often if I have the AC and radio on. Like it's just too much electricity. Should I be worried? Do others have this problem? Is it even a problem? Or am I just being neurotic?

 

[MB DNA]

Should I be worried? Do others have this problem? Is it even a problem? Or am I just being neurotic?

Welcome to SCoA and EDworld.

Odd comparison, ED is so much more than a printer?

With a smile, YES a tad neurotic.

Give it a few more months and if it still bothers you take it in while under warranty.

ED can be so quiet that you hear things you wouldn't normally hear in an ICE?

 

[Mister_smart_LA]

I recently purchased a used 2014 ED (still has about 10 months of factory warranty left) and every once in awhile it will make a loud click. It's very similar to a clicking problem we had a work recently with too many electronics on the same circuit. When the printer would come out of sleep mode to print, the UPS battery backup would click and sometimes the computer would surge. When we moved the printer to a different outlet that was on a different circuit breaker the clicking went away. The clicking in the smart seems to happen more often if I have the AC and radio on. Like it's just too much electricity. Should I be worried? Do others have this problem? Is it even a problem? Or am I just being neurotic?

I have no idea what noise you are hearing. Maybe you're hearing the click from the shift lock mechanism as you apply the brake and push the shift knob to move it into gear? Maybe you're hearing an ABS system self-check during startup? I'm on my 2nd smart EV, and been in and out of many hundreds of various smart EV's since 2010, and haven't heard any clicking issues that I can recall.

 

[Tony Margulis]

I'm thinking maybe it's the AC/compressor turning on and off. It's a very quiet car, so your right, I could just be hearing something completely normal.

 

[stevenjb]

If coming from the left side under dash, could be a relay in the SAM unit.

Sent from Tapatalk on Android

 

[Tony Margulis]

If coming from the left side under dash, could be a relay in the SAM unit.

It IS coming from the left side under the dash. What the heck does it mean?

 

[Jeb Baker]

time to record and post?

 

[Yinzer]

Should I be worried? Do others have this problem? Is it even a problem? Or am I just being neurotic?

No. No. Very likely no, Yes.

If the car is running normal and there are no warnings on the panel, don't worry! Electric vehicles have lots of relay clicks and other odd noises. I'm sure you have already noticed the (comparatively) loud periodic "brrrrrrrrrrrRRRP!" of the brake assist vacuum pump. I always like the interesting relay that emits a melodic "bouuunk!" a second after switching the key to the off position. But the oddest one for me is the strange, soft, "nock-nock-nock-nock-nock-nock" noise from somewhere (under the dash?) that happens at random times when the car is on, but stationary.

 

[Tony Margulis]

The car is running great. I don't notice anything wrong, so I guess it's normal. It's just a loud relay that likes to click fairly often. Like once every minute or two while driving. It's about the same loudness as the one that clicks right after you turn the car off.

 

[Yinzer]

That does not occur on my car. Does it do it regardless of the heat/AC settings? I guess you can always take it by a dealer when convenient for a diagnostic readout.

 

[Tony Margulis]

I'll drive it tomorrow with the AC off and see if it still clicks. If it gets any worse I'll take it to the dealer. It's just not convenient, nearest smart dealer is about 45 min drive and I won't make it round trip on a single charge.

 

[Anonymouse]

I have the same clicks. It's a combination of the headlights turning on/off, some other relays, and the thermostat turning on/off the A/C compressor.

 

[Tony Margulis]

Yes, the AC compressor is definitely it. I drove all week with no AC and didn't here it at all. I turned the AC on and started hearing the clicking. The AC works fine, so I think it's normal. I've been doing a lot of research on Relays and it seems as though most cars have most of the relays under the hood so you don't hear them. For some reason Mercedes decided against that?

 

[Mister_smart_LA]

Yes, the AC compressor is definitely it. I drove all week with no AC and didn't here it at all. I turned the AC on and started hearing the clicking. The AC works fine, so I think it's normal. I've been doing a lot of research on Relays and it seems as though most cars have most of the relays under the hood so you don't hear them. For some reason Mercedes decided against that?

I would try adjusting the temperature and deselecting the 'AUTO' function of your climate control to see if the clicking goes away temporarily. If it does go away, then try 'AUTO' again and perhaps try different temp settings. If it goes away, it's possible you were unaware that your 'AUTO' setting was relying on a temperature that was pretty much identical to the ambient air temperatures. If NOT, then I would assume your climate control system needs to be looked at for potential warranty repair.