Q: Sunroof was open during rain and car won't start

asked by on June 14, 2016

I accidently left the sunroof open one night and it rained 2”. Fortunately, I had left the doors unlocked too, so I was able to get in, but nothing would turn on the next morning. There is no voltage in the battery and I tried jump-starting it with a friend’s car. The electrical system does seem to come on, but the car only cranks and just won’t start. What are the solutions for these problems?

If the ignition switch sustained damage from the water, it could cause the vehicle to start. Unfortunately, with this amount of water in the vehicle, it can short out wiring and cause extensive corrosion in the various systems. The vehicle will need to be thoroughly cleaned and any wet electrical connections repaired. This will require professional care to prevent long term damaged. If you need assistance, a qualified technician, such as one from YourMechanic, can come to your car’s location to diagnose your car’s starting issue as well as any other problems that might have been incurred by the rain.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Lost oil until motor siezed

This is a common issue for this generation of Highlander. Toyota released a technical service bulletin (TSB) related to cam housing oil leaks. The associated TSB (T-SB-0321-08) covers the inspection, diagnosis and repair of the cam housing oil leak. However,...

My car has a coolant leak but the engine is not overheating.

Since you have had the water pump and intake gasket replaced in the last two years, I would recommend having the system pressure tested and inspected to see if the radiator is leaking or the water pump is leaking again....

As I'm driving, all my lights inside/out of the car turn off and the car still stays on. But when I turn the car off it won't turn over

Hello there. The charging system on the car may not be charging the battery as you drive and the systems that keep the engine running are priority so the engine will stay running until the voltage drops below about 9...

Related articles

How Can I Tell If My Car Battery Needs Replacing?
There There are few things more frightening than hearing buzzing or clicking from your car when you’re trying to start it. It could mean any number of things, but chances are that it means you have a faulty car battery....
How Long Does a Battery Cable Last?
Transferring Transferring the current from the battery to the starter and alternator is the job of the battery cables. Every time you try to start your car, the battery cables will have to deliver the power needed to fire off...
The Top 8 Things That Will Drain Your Car Battery
Your car battery could keep dying from a variety of reasons such as age, a bad alternator, human error, and more.