NXP's Ultra-Wideband Chip Powers BMW Digital Key Plus and Presence Detection Starting in 2026
NXP Semiconductors will supply BMW with its Trimension Ultra-Wideband chip, enabling hands-free digital key access and in-cabin presence detection in selected 2026 vehicles.
- 2026
- $12.27 billion
What Happened
NXP Semiconductors announced that its Trimension NCJ29D6 Ultra-Wideband (UWB) family will be deployed by BMW Group across its fleet, starting with selected 2026 vehicle programs. NXP describes the chip as the first monolithic automotive UWB solution to combine secure fine-ranging and short-range radar capabilities. This enables both safety applications like presence detection and convenience features like BMW's Digital Key Plus, which replaces the traditional key fob with a smartphone or smart watch.
Presence detection addresses potentially emerging regulatory requirements and supports future NCAP protocols in Europe and China. The system uses UWB to detect subtle motion patterns consistent with occupant presence and warns vehicle users if people or animals are left in the cabin. NXP notes that the driver retains full control of the vehicle and remains responsible at all times despite the assistance.
- Hands-free locking and unlocking using a smartphone or smart watch
- Presence detection that warns users if people or animals are left in the parked vehicle
- Personalized experiences on approach, such as individual light conditions and welcome sequences
- Potential future features like kick sensing, intrusion alert, and automatic charging
“NXP's proven Trimension UWB platform maximizes value for OEMs, using a single system to deliver multiple new and differentiating features for drivers. Digital key and presence detection are just the beginning. OEMs will be able to deliver additional UWB-based features, such as kick sensing, intrusion alert or automatic charging, as they establish the secure hardware platform in their vehicles.”
NXP announces BMW deployment of Trimension NCJ29D6 UWB family
Selected BMW vehicle programs begin using the UWB technology
Why this matters
For buyers of upcoming BMW models, this means a smartphone or smart watch can replace the key fob, and the car can warn if a person or animal is left inside in hot conditions. For automakers, NXP says the single-chip system handles both radar-based presence detection and secure ranging, so one platform supports multiple features. The technology also helps BMW prepare for potential safety regulations and NCAP protocols in Europe and China.
Terms in This Story
- Ultra-Wideband (UWB)
- A short-range wireless technology that uses radio pulses to measure distance and motion with high accuracy, enabling secure vehicle access and detection.
- Presence detection
- A safety feature that detects living beings inside a parked vehicle and warns owners if they are left behind.
- NCAP protocols
- New Car Assessment Program safety testing standards used in Europe and China that evaluate vehicle safety features.
- Digital Key
- A virtual car key stored on a smartphone or smart watch that allows hands-free locking, unlocking, and starting.
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