2020 GTI SE 170: Codes B2A40/B2A41

[Carboncow]

about 80 hours on this ride. Noted today VTS didn't want to go up/down or if it did it was slow to respond. No suspecting a keypad issue on the left for VTS as the accept Sport Mode is on the right. All other features seem to work.

Restart and pulling lanyard had no issue. Will disconnect battery tomorrow.

Any experience here? Actually hoping to sell the ski in the next few weeks, so I guess this was to be expected!

 

[skiasylum]

Load test your battery out of the ski, it’s probably bad.

 

[Carboncow]

Load test your battery out of the ski, it’s probably bad.

Thanks. Running an AGM in there now (new about 2 months ago) as it has great CCA but I did read last night they need more voltage to charge. I think when my fish finder is on it tells me I'm at 14.2+ volts while underway which should be enough to run systems although might be low for AGM charging.

We are heading down to the lake shortly and I'm going to pull the battery, bench test it, then charge and text again. In the mean time I'm going to slap a good GEL battery in there I have not he bench to see if it does better. This should eliminate the common battery issue variable.

 

[Carboncow]

UPDATE: Got down to the boats early today...pulled the battery and put in a 100% "good" GEL battery and the VTS is working fine. So did a load test on the questionable battery and it was more then happy (see attached) but...from a single trip to salt water land the negative side is very corroded and this is a battery that is less then 2 months old! We ski freshwater but took the skis to Forgotten Coast for a week. Although they were flushed daily (and protective sprayed), that terminal is angry.

I'm not sure how it has more then enough grunt to start the ski but has enough voltage issues to mess with the VTS. I'm going to replace the nut, charge the battery and put it back into production as this has a lot more CCA then the GEL battery I've got in there currently.

Any input if this all sounds possible that a bad connection to the battery could be to blame but have the amps to start. I noted when hooking the load tester up to the battery in question is didn't like the connections the first few times telling me that the connect was "not good" until I find a sweet spot on the nut.

 

[skiasylum]

The IBR/VTS module and the ECM module are constantly comparing voltages over the cann bus and the ECM will throw codes and shut functions down if the slightest discrepancies/voltage drops are detected. That corrosion/voltage drop on the negative terminal would definitely be noticeable.

 

[Carboncow]

The IBR/VTS module and the ECM module are constantly comparing voltages over the cann bus and the ECM will throw codes and shut functions down if the slightest discrepancies/voltage drops are detected. That corrosion/voltage drop on the negative terminal would definitely be noticeable.

Thanks. I was just getting ready to hit up some electrical nerds on Reddit to explain the sensitivity of the systems. That nut was tight on the battery...just blown away that much corrosion happened in less then a month and caused this minor headache. My heart goes out to saltwater jetters!