emilfuchs37
Active Hood Fault Diagnosis
Summary of the thread
A 2012 Mini Roadster diesel experienced an active hood fault, indicated by an on-board computer message and an illuminated airbag warning lamp. The error memory suggested a fault in the active hood system, with triggered spring actuators, and a defective acceleration sensor was suspected. The suggested solutions included checking the wiring harness, clearing the error memory using an OBDII scanner, and replacing the faulty acceleration sensor. Ultimately, replacing the acceleration sensor resolved the issue.
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4 comment(s)
emilfuchs37 (community.author)
Wiring harness and clearing the error memory, you say? Where exactly are these acceleration sensors located? And how do you clear the error memory?
kurtblaze2
Right, the acceleration sensors are usually located near the front of the car, often near the impact zones. Consult your car's repair manual for the exact location. Clearing the error memory typically requires an OBDII scanner. You plug it into the diagnostic port, read the error codes, and then use the scanner's software to clear them. However, if the fault is still present, the error code will likely reappear immediately. Considering your symptoms and the triggered actuators, it really does sound like a faulty sensor. Given the car safety implications with the crash detection system, and the pedestrian safety aspect of the active hood, I would suggest that a workshop replaces the acceleration sensor.
emilfuchs37 (community.author)
Thank you for the insights. I had the acceleration sensor replaced and that resolved the active hood fault. The cost was indeed around 315€, as initially estimated.
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MINI
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ROADSTER
kurtblaze2
Active hood fault, eh? Sounds familiar! Had a similar gremlin with my Volvo a while back. Airbag light, error messages... the whole shebang. Was pulling my hair out trying to figure out what was going on. Did you check the wiring harness to the acceleration sensors? Those things can be surprisingly fragile, and a break in the circuit can trigger all sorts of phantom errors. Also, have you tried clearing the error memory after checking the connections? Sometimes, a simple reset can do the trick. Is the hood latch working correctly?