Guest Post: W210 E430 – Replacing Cabin Air Temperature Sensor Fan
Editors Note: This is part two in a series by Nick Gruzevskis about owning a W210 430. The first part can be found here.
I’m one of those individuals that can’t handle interior noises, mostly rattles & squeaks, but in this case it’s been a buzzing noise coming from the dome light in my new E430. I had procrastinated long enough, so did some research online and identified the likely culprit, the cabin air temperature sensor fan. It’s a tiny little fan with a temperature sensor, which continually sucks in cabin air for temperature measurement.
I first attempted to clean the fan, removing the dome light assembly, which was easier than I anticipated, blowing the fan with compressed air. After re-assembling symptoms were identical, so then thought I must order part before it goes NLA. I found the part was still available, PN 140-830-00-08 ($79.12 USD) and ordered part from Pelican Parts. A week later I had the part.
Replacing part was very simple, as I’d already removed dome light and had disassembled to clean my original part. Within less than an hour I had everything back together and confirmed new part had successfully fixed problem.
It looks like Mercedes used the same part for models using the digital LCD climate control unit, e.g. W140, W210, C208, W202. If you have a Mercedes with one of these climate control units, I recommend buying a spare while the part is still available
Author: Nick Gruzevskis is a contributor to classicjalopy.com, and the custodian of a great collection of classic and modern cars. Links to some his other articles can be found here
