EDK-916 Electronic Gear Selector Switch

Overview

On a vehicle with a conventional automatic, the shift lever is joined to the transmission by a cable or linkage — move the lever and you mechanically move the selector inside the gearbox. A shift-by-wire vehicle removes that link: the driver's gear choice becomes an electrical request, and a controller engages the gear. The EDK-916 is the driver's end of that arrangement — an electronic selector that reports P, R, N or D instead of moving anything mechanically.

It uses push-buttons rather than a lever rocked through a gate, which packages compactly on a console or dash and suits the cleaner interiors common on new-energy platforms. There is no mechanical detent to reproduce, because each press is simply a request the controller acts on.

What the selector does — and what the controller does

It is worth being precise about the split, because it decides how the part is specified. The EDK-916 captures the driver's requested gear and lights the button that has been pressed. It does not decide the gear on its own: the transmission or vehicle controller takes the request, checks vehicle conditions, engages the range, and reads its own transmission-range sensor to confirm what is actually engaged. That confirmed range is what the instrument cluster shows. So the selector is an input and a local indicator — the authoritative “gear engaged” answer comes back from the controller, not from the switch.

Shift interlock

The most important behaviour in a gear selector is what the system refuses to do. A shift-by-wire driveline carries a shift interlock — most commonly a brake-to-shift rule that blocks leaving Park unless the brake is applied, and often a block on selecting a driving gear at speed. On this architecture the interlock logic lives in the controller, not in the switch; the EDK-916 supports it by passing the driver request and the inputs the logic needs. The exact conditions are defined with your transmission or vehicle controller, which is why a selector is specified and validated as part of a driveline rather than on its own.

Where it fits in the driveline

The request leaves the selector and ends at the transmission. It is exchanged with the transmission controller or the vehicle control unit (VCU) on a new-energy platform, over discrete lines or a vehicle bus depending on that controller — confirmed per programme. On the cabin side the EDK-916 sits with the other console controls; where a programme also runs bus switch panels, the EDK-907 CAN-bus switch panel and EDK-2507 rotary switch are the related Youlai HMI parts.

Manufacturing & what we confirm at RFQ

The EDK-916 is built under IATF 16949 with APQP planning and a PPAP package on handover. Because its interlock behaviour and signalling are driveline-critical, they are agreed in the control plan for each programme, with environmental screening in our in-house lab and EMC certification at accredited third-party laboratories when a programme calls for it. Because it is quoted to your driveline rather than sold as a fixed signal set, a few things are settled at quotation:

• the transmission or vehicle controller it must talk to, and whether the interface is discrete or a bus;
• the gear layout — P/R/N/D or a subset, plus any manual or low-range position;
• the shift-interlock conditions and the vehicle-state signals that release a shift;
• the system voltage — and, for a 24 V programme, whether a suitable variant can be offered;
• button backlighting and legend, the mounting position and console cut-out, and the protection rating there;
• the connector on the vehicle side, and expected annual volume.

Send the controller details and a drawing with your enquiry through the contact page, and the first sample is matched to your console and controller.

Common questions