Blue&Me Control Unit Alfa Giulietta (940_)

Typical Defects:
Bluetooth does not work, does not connect with the mobile phone
The kilometers flash on the instrument panel
The USB stick does not work
The battery tends to discharge abnormally, especially after short periods of inactivity
The steering wheel controls do not respond or work partially
The hands-free system stops working
Unable to perform proxy alignment
Does not enter diagnostics

Error Codes:
147164 - Generic error
147180 - Generic error
147188 - Generic error
147210 - Generic error
147216 - Generic error
147247 - Generic error
147252 - Generic error
147268 - Generic error
168689 - Generic error
168697 - Generic error
168699 - Generic error
168702 - Generic error
168703 - Generic error
168713 - Generic error
168715 - Generic error
168731 - Generic error
168743 - Generic error
47204 - Generic error
B1005 - Diagnostic sensor unit
B1039 - Dynamic control selector input
B10AA - Proxy configuration control
P0022 - Convergence node control unit
U1602 - CAN bus line error, off/intermittent
U1701 - Communication error with body computer
U1707 - Info-telematics control unit/Convergence control unit
U1733 - Communication with telematics system, missing message

The Blue Me control unit&with OE code 50529134 è a second-generation multimedia module, internally identified as version Lauberhorn. This component è has been installed on the latest Alfa Romeo Giulietta produced until 2013, before the’introduction of the Uconnect system. It is part of the Blue family&Me standard, that is without integrated navigation.

The module è produced by Magneti Marelli and features the following technical specifications:

• Flash memory NW140 integrated
• 7 pin connector
• Bluetooth 2.0 + EDR (supports HFP and PBAP profiles, not A2DP)
• USB port 2.0 for connecting multimedia devices
• AUX input (available on some trims)
• Compatibilityà with smartphones improved compared to previous versions
• Resolution of the known issue of the’eco in conversation

The control unit è interfaced with steering wheel controls, audio system, onboard display, and body computer. It manages hands-free telephony, phonebook reading, voice commands, and audio file playback via USB.

DIPA può intervene to review this module as well.

Common issues of the Blue control unit&Me OE 50529134

The Blue control unit&Me cod. 50529134 è subject to various electronic defects, largely related to the firmware and internal NAND memory. Failures can compromise communication with the’infotainment system, the operation of controls, and even cause abnormal battery drain.

Frequent malfunctions:

1. Absence of the Blue logo&Me at’startup

Possible firmware crash or damage to the NAND memory

1. non-functional USB

No recognition of connected devices, not even charging; a symptom of firmware corruption

1. Unstable or absent Bluetooth

Connection failure, frequent disconnections, module overheating

1. Messages d’error on the onboard display

Type indications “Blue&Me Unavailable” or “Error Blue&Me”, caused by outdated or corrupted firmware

1. Abnormal absorption when the vehicle is off

The module remains active even with the key removed, causing battery drain in 48–72 hours

1. Firmware update impossible

The system canò freeze at boot, rendering USB files unusable. Disconnecting the battery canò help, but it is not è a definitive solution

1. Flashing km on the instrument panel

Symptom of proxy misalignment or communication error between modules

1. Non-operational or partially operational steering wheel controls

Caused by wear of the buttons or, more often,ù by corruption of the internal memory

1. Inabilityà to diagnose

In case of a severe failure, the diagnostic tool mayò not recognize the control unit

Related symptoms and error codes

A Blue module&A faulty Me module mayò show widespread symptoms throughout the infotainment system, also interfering with other control units. The error codes areù common issues found in diagnostics are:

Generic errors:

• 147164, 147180, 147188, 147210, 147216, 147247, 147252, 147268
• 168689, 168697, 168699, 168702, 168703, 168713, 168715, 168731, 168743
• 47204

Specific network and proxy errors:

• B1005 – Unit errorà sensor diagnostics
• B1039 – Dynamic control selector input
• B10AA – Proxy configuration error
• P0022 – Convergence node control unit anomaly
• U1602 – CAN bus line error
• U1701 – Communication failed with Body Computer
• U1707 – Malfunction of the info-telematic module
• U1733 – Failure to communicate with the telematic system

Summary of the mostù common problems

• Bluetooth not functioning or unstable
• Flashing kilometers on the instrument panel
• USB stick not functioning
• Battery drain even when the vehicle is stationary
• Steering wheel controls are unresponsive
• Hands-free not operational
• Proxy misalignment
• Control unit not accessible in diagnostics

Conclusion

The Blue control unit&Me OE 50529134 è a complex multimedia module that, over time, canò exhibit numerous faults, especially related to NAND memory and firmware management.

DIPA supports customers throughout the entire relationship phase, from’order to’after-sales support. Itò can intervene to review these components and restore them to full functionalityà, saving on replacement costs and benefiting the’environment thanks to’circular economy.