Skip the auto shop - Our mechanics make house calls

Q: Bluetooth works engine off

asked by on

My Bluetooth voice only works when my engine isn’t running. And it works OK with the key turned on and engine not running. When I start the engine the Bluetooth calling on an after market Bluetooth device is unusable. I have a Parrot Asteroid Classic radio with Bluetooth. iphone 4 and 5 don’t work with this radio. It has a lot of known problems but Bluetooth isn’t one of them. My Parrot radio installer who has 30 years experience dealing with AM noise can’t figure it out because there is no AM noise. He switched out the radios changing the ground from float to chassis. I have tried different phones and phones from different distances in case the iphone is creating some magnetic interference. Could there be a known problem with these vans with interference coming from a specific part of the engine such as the alternator?

A: Hello. EMI (electromagnetic interference) i...

Hello. EMI (electromagnetic interference) is electromagnetic energy that is passed through electronic devices. EMI is disruptive and can affect bluetooth devices and/or your GMC Safari’s electronic system if not properly shielded. This is not a common problem, but it is possible that any of the engine electronic components are causing EMI, and affecting the performance of your bluetooth.

It is also possible that external factors like, power lines, satellites, radio towers, may be causing electromagnetic interference, causing your bluetooth to malfunction when the engine is on. If your problem is, in fact, electromagnetic interference (EMI) certain internal engine systems may be greatly affected and potentially dangerous, such as the ignition system, the electronic braking system, the tire pressure monitoring system, the fuel control system, the air bag, and/or the powertrain control module (PCM). Other Parrot Asteroid Classic Radios with bluetooth may or may not present the same problem.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: can new XM turner be used with old XM antenna

In most cases the XM antenna that came installed with the car and can be adapted to the new head XM tuner. It would depend on what XM unit was purchased. You will most likely need to take the car...

Q: AC doesn't work, compressor still works

Hello. If there is no air blowing out of the vents then the compressor is typically not the problem. It is common for the blower motor to fail and cause this as well as the blower resistor. Both of these...

Q: Speedometer

The problem may be with the speedometer itself or the speed sensor. The vehicle should be scanned and road tested to see what the speed sensor is inputting to the computer. If the sensor is at fault then it will...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...