This rebuilding service allows you to send in one or more components from your Mercedes-Benz HVAC system for expert repair. Serving a wide range of models from 1981 through 1995, this service provides a reliable and affordable alternative to replacement, helping to keep your classic Mercedes’ climate control system operating as it should.

If your part number or model is not listed below, feel free to email us at Info@CruiseControlRepair.com

Applicable Models and Ranges

• W123: 1981–1985

• W126: 1981–1985

• R107: 1981–1989

Supported Items and Part Numbers

Blower Motor Control Unit

• 000 822 11 03

Temperature Regulator

• 000 822 09 03

• 000 822 10 03

Automatic Climate Control Push Button Unit

• (W123) 123 830 12 85

• (R107) 107 830 27 85 (up to 1989)

• (W126) 126 830 02 85

Three-Piece Special Service

Includes repair of one of each of the three items above — ideal for a complete “whole HVAC system” electronics overhaul on pre-1986 vehicles (excluding the SL).

1986+ Automatic Climate Control Push Button Unit

Found in W126, W124, and W201 models from 1986–1995. (Not applicable to the R107 SL — see above.)

Temperature Regulator + Push Button Unit

Combined service for one Temperature Regulator and one Push Button Unit.

Klima Relay

The Klima relay controls the A/C compressor clutch, engaging or disengaging it based on system conditions. In some models, it also monitors compressor speed and disables the clutch if a belt slip is detected.

What You Can Expect

As with all my services, this repair is offered as-is, without warranty or liability, due to the age and complexity of these electronics. Each repair benefits from years of experience and proven techniques that target the most common failure modes to restore reliable function and extend service life.

Over the years, I’ve repaired hundreds of Mercedes climate control units that continue to perform flawlessly on the road today — a testament to careful craftsmanship and attention to detail.

How It Works

After your purchase, detailed shipping instructions will be emailed to you. Please package your unit(s) carefully to prevent damage during transit.

Questions or Concerns?

If you have any questions about compatibility or the repair process, don’t hesitate to contact us at Info@CruiseControlRepair.com