BMW 520D MSport Water in the Boot

BMW 520D MSport Water in the boot and electrical drivetrain and handbrake faults.

[@mouse30227]

Going through this issue now ya vid was straight to the point thank you I just purchased the car and after a 45 minute drive home the car stalled on me wouldn’t start i left the car parked at local gas station I changed the battery the next day Emptied the water out thank god there was a detailing shop there used the wet vac I got the car home and been tryin to assess the problem you video gave me the best idea as to what the problem maybe thanks I’ll try to take the light out and surrounding components end of this week But I was definitly plannin of drillin some custom drain holes with a mesh grill so debri doesn’t get in under the battery the fact that there isn’t any is Wow to me I’ll update you and everyone looking for solutions on my fix

[@thedrmteam100]

Hi David, what exactly do you mean by the grommet fails, does the bottom part of the grommet rip or something and then water leaks through it? What is the exact function of that grommet and can zi just completely remove it and silicone those 2 holes on either side? Also where exactly have you drilled the 10mm hole/s…thanks

[@damorrill]

Drilling a couple of 10mm holes permanently solves the problem

[@HasanH1993]

What is the problem?

[@reggiebuff8501]

No more BMWs for me. Too many weird problems. I'm selling my 530i.

[@andreiivan9135]

How did you fix it?

[@reggiebuff8501]

It looks like he just drilled holes at the bottom and will leave it like that. I had major flooding in my trunk today. The electrical relay was completely covered and the car would not crank. I dried everything out, took apart the relay assembly and let it sit in the sun. Afterwards, the car cranked up. I'll be drilling holes as well. I don't trust those drain hoses.

[@damorrill]

You need to remove the two grommets and replace them. Then very carefully replace the plastic covers. I also siliconed around the grommet. The damage is often caused by roughly removing the plastic covers.

[@reggiebuff8501]

@@damorrill Got it!

[@totophandhamaly9944]

@@reggiebuff8501 Can you show where you drilled the holes and where is the water going from the new drain holes?Thanks for your time

[@reggiebuff8501]

@@totophandhamaly9944 I realized that my flooding didn't come from rain. I carry a cooler full of ice in my trunk and the condensation built up and had no where to go but at the bottom of my trunk.