What is the solution for a heavy steering wheel in a Mercedes-Benz?

[VanElijah]

It may be due to a blocked sunroof drain outlet, causing rainwater to flow poorly and gradually seep into the vehicle interior. For such issues, you can use an iron wire to make a hook to reach into the drain hole and pull out debris; alternatively, you can visit a repair shop to use an air gun to blow out the debris by aiming it at the drain hole.

[IanAnn]

Last time my Mercedes-Benz E-Class steering wheel felt as heavy as pushing a brick, which really startled me. After checking, I found that power steering systems often have issues, like insufficient or degraded power steering fluid, causing the pump to underperform. My experience is to first pop the hood and check the fluid level in the power steering reservoir—top it up if it's too low; if the fluid is dirty and black, it needs replacing. If that doesn't help, the pump might be faulty or the filter clogged, so take it to a professional repair shop—don't try fixing it yourself. Also, don’t forget to check tire pressure, as low pressure can make steering harder. After the repair, I made it a habit to service it every six months to avoid a repeat. These steps aren’t hard, but ignoring them can compromise handling safety.