Push Start Stop Button Replacement for Mercedes SLK-Class R172 (2012 to 2014)

Push Start/Stop Button Replacement for Mercedes SLK-Class R172 (2012–2014)

The SLK-Class R172 brought a sharper, more driver-focused character to the entry-level Mercedes roadster. In the compact cabin, the KEYLESS-GO start/stop button sits close to the driver's hand at all times — the centre console is narrow and the layout puts every control within immediate reach. That proximity means the button is touched, brushed against, and pressed more than in larger vehicles where the console is further away. Over several years, the factory button surface shows exactly that level of contact.

This replacement button unit fits the R172 directly and returns the switch to its original condition.

Looking to upgrade the interior of your car? Also visit the Mercedes section of our aftermarket parts shop.

Compatible Mercedes Models

Mercedes-Benz SLK-Class (R172) – 2012 to 2014

Mercedes-Benz SLK 200 / SLK 250 / SLK 350 (R172) – 2012 to 2014

Fits R172 vehicles with factory KEYLESS-GO push-button start. Verify your button style against the product images before ordering.

Compact Roadster — High Contact, Compact Console

In the R172, the interior is stripped to essentials — everything is within reach and everything is touched. The KEYLESS-GO button is no exception. The compact console layout means it catches incidental contact more often than in a saloon, and the roadster use profile — frequent short drives, hood-down touring, driver-only use — puts high press counts on a vehicle that may not show high mileage on the odometer.

The button face typically develops a worn patch at the centre contact point, and the chrome bezel picks up circumferential scratches from ring and cufflink contact. Standard interior cleaning has no effect on this type of wear. The correct fix is a direct replacement.

What the Replacement Covers

The complete outer switch unit — button cap, chrome ring, and retention clip. Pre-assembled and ready to install. The original connector plugs into the replacement without modification.

Installation

Disconnect the plug at the rear of the button, release the retention mechanism, and remove the worn unit. Fit the replacement, reconnect the plug, and test. The process takes 10 to 15 minutes and does not require console panel removal.

Why This Replacement Is Worth It

Complete switch assembly — button cap, chrome ring, and retention hardware

Addresses the high-contact nature of the compact R172 console layout

No KEYLESS-GO recalibration — the system starts and stops normally after fitting

Worthwhile saving versus a Mercedes dealer or specialist workshop

Explore all parts and accessories for Mercedes, browse our full range of replacement interior buttons and controls, and discover more in our interior trims collection.

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