Multiple shops couldn’t fix this 2002 Mercedes E320 so it was sent to mechanic who couldn’t believe what he found

  • This 2002 Mercedes E320 had a big problem
  • A YouTube mechanic decided to take a look at it
  • What he found left him stunned

Published on Mar 11, 2025 at 4:47 PM (UTC+4)
by Ben Thompson

Last updated on Mar 11, 2025 at 8:00 PM (UTC+4)
Edited by Kate Bain

When multiple shops couldn’t fix this 2002 Mercedes E320, it was sent to a mechanic who couldn’t believe his eyes.

The Mercedes’ owner was driving along when all four windows went down and refused to go back up.

A YouTuber known as Car Wizard was called in to try and fix the problem.

What he found was a very common mistake which had caused a big issue.

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What was wrong with this 2002 Mercedes E320?

Upon first glance, there didn’t appear to be anything majorly wrong with this car.

Sure, it was a little dirty but that comes with living out in the country right?

We’ve certainly seen messier cars over the years, like this filthy Rolls-Royce or this gross Ford GT.

This car had 219,848 miles on the clock, which was relatively high, and the interior was looking a little worn out in parts.

But none of this goes anywhere near explaining the window situation.

The mechanic determined that it wasn’t due to a motor failure, so he made use of the Mercedes’ Star Diagnostics tool to get to the root of the problem.

It turned out that the culprit was faulty window switches.

So, what caused them to go faulty?

That was the work of a spilled drink.

How a common mistake led to a big problem

The button that controlled the windows was located next to the stick shift.

It’s not uncommon for a driver – or even their passenger – to place drinks in this area.

But it’s a risky game to play, as the dried coffee on the unit proved.

The host explained: “We now know that something was spilled into the window switches.”

Inside the switches, there was a ton of corrosion on the circuits and they had short circuited as a result.

Upon getting a closer look, the host remarked: “Oh my god, you guys. It looks like a nuclear wasteland.”

This wasn’t the first time a spilled drink had caused some issues, as the host admitted this was an issue he’d seen before.

And it was one that caused customers to get defensive, as they would insist they hadn’t spilled any liquids.

The necessary replacement was rare, with $200 being the going price for the correct part.

So let this be a lesson to you – think twice before you enjoy your morning coffee in your car.

To see the full explanation of what went wrong with this 2002 Mercedes E320, head over to Car Wizard’s YouTube channel.

Next time you’re in the car, be careful where you put that coffee or soda down, too.

Let this be a lesson to us all.

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Ben Thompson is a Senior Content Writer at supercarblondie.com. Ben has more than four years experience as a qualified journalist, having graduated with a Multimedia Journalism degree from News Associates. Ben specializes in writing about Teslas, tech and celebrity car collections.