Water Puddles on the 12v Battery after carwash

Water Puddles on the 12v Battery after carwash

After a non-high pressure car wash, my TM3 SR+ RWD always requires me to manually dry the top of my 12v battery and other components under the frunk cover. It gets REALLY wet with soapy water and puddles everywhere in that compartment.

Does anyone have this issue? Can it happen in windy rainy environments? Does it ever cause any harm in EV or ICE vehicles?

Wish I had taken a photo before I dried everything off, but here is one after I dried it:

bp | October 17, 2019

You do have a cover under the front trunk lid that you’re removing, right? It’s not just absent on your car?

syclone | October 18, 2019

I love when posters use imgur - the other postings are much more interesting than the Tesla entry :-)

mwithersit | October 18, 2019

I do have the cover under the frunk, but it still gets through the slits and sides

Joshan | October 18, 2019

really doubt its an issue. Think how much the battery in your ICE gets soaked when you drive through puddles.

bp | October 18, 2019

FWIW, I just checked mine (it’s been pouring for days here) and don’t see any puddles on the battery. Little bit of water around the edges of the batter cover.

Rodo | October 18, 2019

Hope you're avoiding sensors and cameras with that power wash. Manual says:

Caution: Avoid using a high pressure power washer on the camera(s) or parking sensors (if equipped) and do not clean a sensor or camera lens with a sharp or abrasive object that can scratch or damage its surface.

bp | October 18, 2019

OP said “non high-pressure wash”.

mwithersit | October 19, 2019

I might make another thread about it, but my windshield on the inside by the cameras underneath the glass have some fingerprints, the tech said it would require a lot of recalibrating to fix

Sarah R | October 20, 2019

I'd suggest that water ingress is a latent defect that should be addressed by a service center under warranty.