Pre-CEM Volvo (Megamos)
- Pre-CEM era — Volvo's earliest electronic immobilizer using Megamos crypto chips
- 850, 940, 960, S70 / V70 / C70 first-gen, S80 mk1 (early)
- Mechanical key blade + transponder head; no proximity / push-to-start
- Locksmith-friendly — supported by standard transponder equipment
850940 / 960S70 / V70 mk1C70 mk1S80 mk1 (early)