Tesla Motors Club
I'm throwing this one open to the community, to see if there are any ideas out there.
Recently I took my Roadster 2.5 in for annual service, plus they had to dig deep under the hood to replace the cabin blower. That meant removing the aux power supply, which I learned is where the car gets it traditional 12 power.
Now, the AM stations are awash in Radio Frequency Interference (RFI). And it's not just the car radio. A handheld radio manifests the problem too. That much RFI is likely an FCC violation.
If anyone wants to watch it in action, here is a video. 6+ minutes of me driving and testing various conditions.
Here are some important points:
1. Higher frequencies are worse. 600Khz is less interfered with than 1100 Khz.
2. When the car stops, (the power generator halts) it stops.
3. The "tone" of the interference seems related to the motor speed (maybe encoder) NOT power generation
4. When I try to "coast" by having the power gauge be zero (no regen, or acceleration), the interference is still there.
5. When I put the car in Neutral and coast, the interference is gone.
8. This started after, and is almost assuredly the result of, the cabin blower being replaced, and the routine annual service performed. It is NOT something with a bad radio.
6. This happens to a hand held radio running on AA batteries as well. No connection to the car at all (see next video).
another 1 1/2 minutes of a handheld radio.
Tesla replaced the antenna, RF amplifier, tested all connections from the PEM, etc... but the problem is still there. They have come up empty.
(The radio was replaced with a Kenwood, per this thread. But, as the handheld indicates, it's not a radio issue.
Replacement of Alpine IVA-NAV-10 )
Has anyone experienced this? Any ideas where to start looking?
-Scott
Recently I took my Roadster 2.5 in for annual service, plus they had to dig deep under the hood to replace the cabin blower. That meant removing the aux power supply, which I learned is where the car gets it traditional 12 power.
Now, the AM stations are awash in Radio Frequency Interference (RFI). And it's not just the car radio. A handheld radio manifests the problem too. That much RFI is likely an FCC violation.
If anyone wants to watch it in action, here is a video. 6+ minutes of me driving and testing various conditions.
Here are some important points:
1. Higher frequencies are worse. 600Khz is less interfered with than 1100 Khz.
2. When the car stops, (the power generator halts) it stops.
3. The "tone" of the interference seems related to the motor speed (maybe encoder) NOT power generation
4. When I try to "coast" by having the power gauge be zero (no regen, or acceleration), the interference is still there.
5. When I put the car in Neutral and coast, the interference is gone.
8. This started after, and is almost assuredly the result of, the cabin blower being replaced, and the routine annual service performed. It is NOT something with a bad radio.
6. This happens to a hand held radio running on AA batteries as well. No connection to the car at all (see next video).
Tesla replaced the antenna, RF amplifier, tested all connections from the PEM, etc... but the problem is still there. They have come up empty.
(The radio was replaced with a Kenwood, per this thread. But, as the handheld indicates, it's not a radio issue.
Replacement of Alpine IVA-NAV-10 )
Has anyone experienced this? Any ideas where to start looking?
-Scott