W126 Klima Relay

A week or so ago, I diagnosed that the likely cause of my non functional A/C in the 300SE was the W126 Klima relay. The second generation W126 went to a Klima relay to control the A/C compressor.

The W126 Klima relay is more of a control unit than a simple relay. It has multiple […]

W126 A/C no longer cooling

There is an old saying that deaths come in threes. I’ve not had any deaths in the family, but I had the A/C dead in three cars at the same time. The easiest was the A/C in my 450SLC that just needed a re-gas. The W126 A/C has been more problematic. Just as I got […]

560SEC Climate Control repairs part 1

When purchased, my 560SEC did not have working climate control. Not only did the A/C not work, but the heater had a mind of its own, occasionally bursting in to life and turning on full heat. Curiously for a car that has been in Australia since the early 2000s, the car had not been converted […]

300SE Double relay change

The saga of my non functional A/C is now over. The 300SE is blowing cold air. It would want to after all the parts I had to change to get this far. The final piece of the puzzle was the Klima relay. This relay controls the engagement of the compressor and had burned out when […]