BSM Isolation Warning # 19 & 283

[dhrivnak]

My car a 1.5 with 3.0 just started to show a BSM: Isolation Warning (#19) and then later we saw a BSM: Isolation Fault 283. I checked the WiKi and could not find any details. Occasionally when very wet and humid I would get the BSM: Isolation fault with the contactors closed (#286) and a short drive always cleared the error and allowed me to charge. But this was different as the warning showed up after driving a while and while warm (88F) and humid (about 80%) it was not wet or raining. When the warning hit we still had full power and was able to drive but it alerted us about 4 times on the drive, which is of concern. The alerts hit after driving about 30 miles.

Just 3 days earlier I took a 400 mile drive in it with no issues.

 

[Marius]

It is the 400V Eberspacher controller. A friend took it out and lay it in the sun or on the heating to get the damp out. Since then no issues anymore. I had the same last year in July when it was extreme hot (40 degrees Celsius). There seem to be alternatives to purchase from GS Technology in Switzerland.

 

[jason.tv]

My car a 1.5 with 3.0 just started to show a BSM: Isolation Warning (#19) and then later we saw a BSM: Isolation Fault 283. I checked the WiKi and could not find any details. Occasionally when very wet and humid I would get the BSM: Isolation fault with the contactors closed (#286) and a short drive always cleared the error and allowed me to charge. But this was different as the warning showed up after driving a while and while warm (88F) and humid (about 80%) it was not wet or raining. When the warning hit we still had full power and was able to drive but it alerted us about 4 times on the drive, which is of concern. The alerts hit after driving about 30 miles.

Just 3 days earlier I took a 400 mile drive in it with no issues.

I don't think they work on the old 1.5 units. Can you post a picture of your 400v controller to see if it's possible?

 

[Bunnak]

It is the 400V Eberspacher controller. A friend took it out and lay it in the sun or on the heating to get the damp out. Since then no issues anymore. I had the same last year in July when it was extreme hot (40 degrees Celsius). There seem to be alternatives to purchase from GS Technology in Switzerland.

I thought the controller was only an issue when it got damp/wet...not extremely hot outside?

 

[Marius]

I thought the controller was only an issue when it got damp/wet...not extremely hot outside?

Thought so too, but apparently in extreme heat in the sun outside temperature high and high humidity it fails as well.

 

[dhrivnak]

Attached are a few pictures from the 1.5. Thank you

 

[jason.tv]

Attached are a few pictures from the 1.5. Thank you


View attachment 570076 View attachment 570077

yea it's the old controller; I don't think GS technology does those. You will have to go to Tesla

 

[ML Auto]

An isolation fault is when a high voltage circuit has some resistance to ground, so it could be any high voltage circuit getting wet. The 1.5 controllers were a lot better than the later models, so my guess is that something else got damp.

 

[Sbax]

Did you get this sorted out? Was it the controller or something else?

 

[Peter.h]

Sorry for reviving an old thread. My 1.5 just started producing error 19s (isolation warning). This happened after I had my roadster parked outside for several weeks (I know .... :-( )

any suggestions where I start Troubleshooting? Is it safe to take the car for a drive in hopes of drying out the moisture?

 

[dhrivnak]

Sorry for reviving an old thread. My 1.5 just started producing error 19s (isolation warning). This happened after I had my roadster parked outside for several weeks (I know .... :-( )

any suggestions where I start Troubleshooting? Is it safe to take the car for a drive in hopes of drying out the moisture?

For me a short drive often cleared the fault

 

[Peter.h]

For me a short drive often cleared the fault

Thank you - that’s what happened for me as well. It seems indeed moisture related.