All H&R ETS modules are plug-and-play, with no wire cutting and splicing or mechanical wrenching necessary. This means that no modifications to your factory wire harness are required and the module looks like a factory installation. H&R ETS modules come with all the parts required for installation. The ETS unit is easily removed whenever you want to return your car back to factory specification.
H&R 12-15 Mercedes-Benz SL550 R231 ETS (w/ABC)
H&R Springs Electronic Lowering System
Air Suspension Control Module
Electronic Lowering System
Mercedes ETS
ETS
