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1A Auto Video Library
Our how-to videos have helped repair over 100 million vehicles.

Find a video for your make but not the exact model? Repairs to similar models are applicable to your car!

How-to Videos for installs and repairs on Mercedes Benz GLS450 Cars

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Signs the Water Pump Is Going Bad
Signs the Water Pump Is Going Bad

Watch this video to learn how to diagnose your water pump. The experts at 1A Auto show you how to check a pump that's leaky or broken.

How to Diagnose a Bad Water Pump
How to Diagnose a Bad Water Pump

Watch this video to learn how to diagnose coolant leaks or cooling problems. The experts at 1A Auto show you how to check your water pump.

Squealing from front of your car or trucks engine not belts Easily diagnose a water pump
Squealing from front of your car or trucks engine not belts Easily diagnose a water pump

In this video, Len shows you how to quickly listen to the engine accessories like pulleys, alternator, and water pump to locate the cause of that awful screeching noise!

How to Find Hidden Coolant Leaks in Your Car or Truck and Know What Parts You Will Need to Replace
How to Find Hidden Coolant Leaks in Your Car or Truck and Know What Parts You Will Need to Replace

Andy shows you how to find sneaky coolant leaks, and points out what parts you might have to replace to stop the leak!

No Heat Coming from Your Vents 5 Chilling Things to Inspect Under the Hood of Your Car or Truck
No Heat Coming from Your Vents 5 Chilling Things to Inspect Under the Hood of Your Car or Truck

Len tells you about common causes of cold air blowing out of vents when the fan is on high, and the temperature is set to hot

Heat Stops Working When Your Car or Truck Isnt Moving Replace These Parts Yourself and Fix It
Heat Stops Working When Your Car or Truck Isnt Moving Replace These Parts Yourself and Fix It

Andy explains why temperatures in your car or truck vents might rise and fall, and how the cooling system is causing it!

Rattling Noise From Your Car or Truck Engine You Can Fix That Scary Sound Yourself and Save Money
Rattling Noise From Your Car or Truck Engine You Can Fix That Scary Sound Yourself and Save Money

Andy shows you how a small noise could signal a big problem!

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