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Data Controller (DC)
Remote Start for Mercedes
2007 - 2009 CL and S Class
Welcome to the installation guide for the 2007 to 2009 CL and S Class Mercedes Benz. Please
review this manual before installation as there are details that are essential to operation of the
vehicle. Please don't forget to review the installation manual included with the DC unit.
This manual is intended for experienced installers. Firstech recommends professional installation as
we are not responsible for improper use and/or installation. For questions please call 888-820-3690
Monday through Friday 8 am to 5 pm PST.
Required Parts and Tools
•
T-25 Torx Driver
•
Panel Removal Tool
•
Drill
•
3/4" Drill Bit
FT-MB221-DC Installation Guide
DC Control Module
www.compustar.com
888.820.3690
Copyright 2010 Firstech, LLC. | 1
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Summary of Contents for Firstech FT-MB221-DC
- Page 1 Please don’t forget to review the installation manual included with the DC unit. This manual is intended for experienced installers. Firstech recommends professional installation as we are not responsible for improper use and/or installation. For questions please call 888-820-3690 Monday through Friday 8 am to 5 pm PST.
- Page 2 24. Slide the ashtray back into place and connect the lighter socket power. 25. Reinstall the cup holder and the (2) T-20 Torx screws that retain it. 26. Reinstall the rubber stoppers that cover the screws. Copyright 2010 Firstech, LLC. | 2...
- Page 3 Data Controller (DC) Remote Start for Mercedes www.compustar.com 888.820.3690 2007 - 2009 CL and S Class FT-MB221-DC Installation Guide Remove rubber stoppers Remove (2) T-20 Remove cup holder Remove ashtray Ashtray removed Pry up on vent Copyright 2010 Firstech, LLC. | 3...
- Page 4 Remote Start for Mercedes www.compustar.com 888.820.3690 2007 - 2009 CL and S Class FT-MB221-DC Installation Guide Remove vent Remove (1) T-25 torx Pry out on panel Metal hook on bottom Unhook plugs from HVAC Remove changer Copyright 2010 Firstech, LLC. | 4...
- Page 5 8. Plug the remaining two connectors into the plugs you removed in step 4, white first, then black 9. Drill a 3/4” hole to mount the valet switch into the corner of the removed under dash panel closest to the center of the vehicle. Copyright 2010 Firstech, LLC. | 5...
- Page 6 15. Tie up any excess length in the harness to avoid contact with moving parts. 16. Reinstall the under dash panel with the (2) plastic fasteners and (4) T-25 torx. Installation Images Remove (4) T-25 Remove (2) fasteners Disconnect light Remove plugs from EIS Copyright 2010 Firstech, LLC. | 6...
- Page 7 Remote Start for Mercedes 2007 - 2009 CL and S Class FT-MB221-DC Installation Guide Pull plugs to edge of dash Plug harness into EIS Drill hole for valet switch Reconnect light Reinstall (2) fasteners Reinstall (4) T-25 Copyright 2010 Firstech, LLC. | 7...
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Page 8: Installation Complete
FT-MB221-DC Installation Guide Installation Complete Firstech, LLC. is not responsible for any damages whatsoever, including but not limited to any consequential damages, incidental damages, damages for loss of time, loss of earnings, commercial loss, loss of economic opportunity and the like that may or may not have resulted from the installation or operation of the Data Controller for Mercedes.