Basic knowledge of vehicle Bluetooth module

Basic knowledge of vehicle Bluetooth module refers to the PCBA (Bluetooth Module) used for integrating Bluetooth functionality in automotive electronic devices, which has the characteristics of high integration, high reliability, and low power consumption, and is widely used in automotive electronics. The following is a summary of the relevant knowledge of the Bluetooth module in car regulations;

vehicle Bluetooth module

Application Fields of Vehicle Bluetooth module

The Vehicle Bluetooth module is mainly used in automotive electrical systems, such as multimedia systems, OBD systems, car key systems, wireless communication control systems, etc. Among them, multimedia systems are the most common application areas, used for Bluetooth music, calls, and other aspects. The OBD system wireless communication is used for car condition and fault prompts, and the car key system is more convenient and fast using Bluetooth;

Performance indicators of vehicle Bluetooth module

The performance indicators of the vehicle Bluetooth module include basic Bluetooth indicators, among which the working temperature is the most representative of distinguishing it from commercial Bluetooth. The operating temperature range of the vehicle Bluetooth module is -40 ° C to 85 ° C, and for commercial use -20 ° C to 80 ° C. The difference between vehicle Bluetooth modules and industrial modules lies in their suitability for harsh environmental conditions, especially in automotive applications. The device may be affected by high levels of EMI, collisions, impacts, and vibrations, as well as extreme temperatures. These products are designed specifically for automotive, transportation, and other critical task applications, comply with industry standard automotive specifications, and are certified by automotive regulations before they can be referred to as vehicle modules

Safety of vehicle Bluetooth module

The vehicle Bluetooth module has important safety requirements in automotive electronic control systems. Mainly including transmission information protection measures, security and confidentiality, etc. Protective measures include hardware and software protection to prevent security threats such as hacker attacks and malicious software. Security and confidentiality include technical means such as cryptography and secure communication, which are used to protect the confidentiality, integrity, and availability of automotive information.


Relate products


  • Bluetooth call HFP: supports third-party calls, call noise reduction, and echo processing functions
  • Bluetooth music A2DP, AVRCP: supports lyrics, playback progress display, and music file browsing operation function
  • Bluetooth phone book download: speed up to 200 entries/second, support for downloading contact avatars
  • Low power Bluetooth GATT
  • Bluetooth Data Transfer Protocol (SPP)
  • Apple device iAP2 + Carplay functionality
  • Android device SDL (Smart Device Link) function

Software features:

  • Chip: Qualcomm QCA6574
  • WLAN specification: 2.4G/5G 802.11 a/b/g/n/ac
  • BT specification: V 5.0
  • Host interface: WLAN: SDIO 3.0 Bluetooth: UART&PCM
  • Antenna type: external antenna (requires 2.4GHz&5GHz dual frequency antenna)
  • Size: 23.4 x 19.4 x 2.6mm


With the continuous deepening of automotive electronics, the development of vehicle Bluetooth module is also facing new challenges and opportunities. In the future, the vehicle Bluetooth module will develop towards higher performance, lower power consumption, and stronger security. At the same time, the vehicle Bluetooth module will also be combined with emerging technologies such as the Internet of Vehicles and artificial intelligence to achieve a leap in automotive intelligence and automation.

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