[zen87]

I’ve noticed a popping sound underneath my ID.4 while charging using Electrify America charges. It feels like a quick hammer pop on the metal. You can definitely feel that pop while seating in the car. Sometimes happens after 5 mins or sometimes after 20. Always pretty random. Sometimes doesn’t happen at all. Lately, it’s been happening more often.

 

[Islander]

Ha! Never heard of this before today. But evidently, this is a thing with Teslas, particularly as the weather gets colder. I guess this could happen with ID.4s too. Why Do Teslas Make a Popping Noise While Charging? | That Tesla Channel

 

[agreenjacket]

I am with you on this one as well. I have noticed the popping noise when charging on a cold morning at EA. Until I saw your post I thought it was just me. Sorry, I don't have an explanation as to why, although the Tesla link makes sense.

 

[fiehlsport]

Normal temperature related expansion.

 

[zen87]

It happened during hot nights, and here in CA is not that cold. Still in low 60s high 50s.

 

[talkingevs]

Our Tesla has done this since day 1. Its because of the temperature issues of charging. Completely normal and nothing to be worried about unless you see smoke

 

[VW TECHNICIAN]

Metal expansion and contracting is what you hear.... there is on the bottom coolant loop that will cause this noise when exposed to temperature changes...regarding breather valve that will not be something you hear but top cover shield on HV Battery pack.
Completely normal and nothing to be worried about.

 

[jcohnc]

Great to hear this is a normal sound. Briefly thought my battery was going to self combust. Last 24 hours vehicle was in temperatures below 64 F. Early afternoon fast charged at 150 kW rate when temperatures were close to 85 F. Right passenger bottom heard a loud THUMP 5 min into charging session and then 15 min later driving back heard an identical one on the driver side floor.

 

[VW TECHNICIAN]

Great to hear this is a normal sound. Briefly thought my battery was going to self combust. Last 24 hours vehicle was in temperatures below 64 F. Early afternoon fast charged at 150 kW rate when temperatures were close to 85 F. Right passenger bottom heard a loud THUMP 5 min into charging session and then 15 min later driving back heard an identical one on the driver side floor.

If it is happening more often you should make some video recordings and bring it to service department for inspection. If you have car scanner app try to record all modules temperatures while charging...if delta between modules are higher than 10°F there could be air pockets in the cooling plate.
If you can provide this information here i will be happy to provide more details.

 

[jcohnc]

Is there a risk for damage or combustion by allowing air pockets?

 

[VW TECHNICIAN]

Is there a risk for damage or combustion by allowing air pockets?

I really don't want to scare you away. Yes if BMS can't keep up with temperature management and module delta temperature. Any of mentioned above are possible.

 

[jcohnc]

OK thx...seems like no other id4 owners so far have reported actual air pockets...more likely it's benign?

I do have a bafx obd2 scanner...I'll check out the temps next time.

 

[VW TECHNICIAN]

OK thx...seems like no other id4 owners so far have reported actual air pockets...more likely it's benign?

I do have a bafx obd2 scanner...I'll check out the temps next time.

Keep watching all module temperatures when charging.
And in next session try to watch all cells when charging for deltaV.
Post some information and i will try to see what is going on.
And little question do you have big change in elevation when coming to the fast DC charging location?

 

[jcohnc]

will do...you have new information that suggests something otherwise than benign metal plate flexing?

 

[jcohnc]

Got my obd and app running. Attached is a screenshot of voltage difference. Delta appears to be 0.01 to 0.02 V Current state is not charging. Will post another when fast charging in a coiple days.

 

[PANZERidIV]

The pops, bangs, and clunks are strange but normal when fast charging, which is all I do.

 

[kenchills]

I have also heard this popping sound on occasion during DCFC and up to 10-15 mins after.
Also sometimes hear the popping when regenning going down a hill when the battery is relatively full.
Glad to hear it's normal.

 

[VW TECHNICIAN]

Still like to see module temperatures delta when DCFC.

 

[VW TECHNICIAN]

And quite amazing cells balance.

 

[Franky]

Still like to see module temperatures delta when DCFC.

Is 113F too high for batteries?
It was 90F here and inlet was at 72F, outlet at 86F. Started to drive and the car was giving this load high pitch whine from compressor most probably working hard at cooling.