I have a 2006 Hyundai Sonata: 1) Horn only works when it is cold outside. 2) Windshield Wipers work but Washer doesn't, don't even hear the washer motor. 3) Pasenger rear Door Lock doesn't close all the way when using the remote, can manually lock and unlock only, all other doors work fine.

Is your wiper fluid level good?Look for leaks at pump,it's connected to container,also check your hoses leaving pump to windshield,could be loose or binding.

On some older cars the washer motor circuit is tied into the wiper circuit, so the large fuse or relay for the wipers also controls the washer motor.
Don't know about your car, but you could take the connector off your washer motor and check for power there, when someone holds the washer pump switch on, and key on.

It's located forward of the RH front wheel behind the wheel well liner.

if you hear the noise of motor when washing ,check fluid level and check clogging of nozzles ,try to clean by a needle.

Are you getting power to the pump if not check your fuse if you are check the hose to the windsheild if cut or clogged

motor for wipers is usually in the centre of windshield mounted on outer firewall in the engine compartment just below the windshield...If your are talking about your Tachometer it could be a cable that hooks into engine..... ask your local Hyundai dealer re this

the pump is located in the bottom of the washer fluid container,check to make sure all the hoses are connected first, sometimes when low on fluid the pump needs to be primed.if you need more help get back to me as i strive to be the best, Please rate my fix?

1. find the fuse panel
2. find the fuse for horn and check to see if it's still good.
if bad replace then recheck horn

This must be due to a defective windshield-washer-switch. Repacement of it is the only way.

check for leaks in the hoses other wise you need a new washer motor