2017 Jeep Grand Cherokee — surface rust underneath a winter daily

This is usually cheaper to test than to guess. Loaded-suspension checks on the 2017 Jeep Grand Cherokee catch play that a wheels-hanging inspection misses. Don't erase codes until someone who can help has seen them. Happy to compare notes if your setup is different. Happens in gear, not in park, for what that's worth.

I wouldn't throw parts yet. If a shop can't duplicate it on the 2017 Jeep Grand Cherokee, bring a video plus freeze-frame data, not just a story. If the cheap test changes it, stop and reassess. This is from a 2017 Jeep Grand Cherokee in Nashville with 114,500 miles. No need to make it theatrical. I'd rather look cautious in this thread than stuck later.

This is usually cheaper to test than to guess. Capture voltage while the 2017 Jeep Grand Cherokee is actually failing — after it restarts you've lost the clue. If the cheap test changes it, stop and reassess. This is from a 2017 Jeep Grand Cherokee in Nashville with 114,500 miles. Learned this the expensive way on a previous car. That's coming from doing this as an owner, not a shop. Trying not to diagnose from the couch.

I'd want a measurement, not a hunch. Capture voltage while the 2017 Jeep Grand Cherokee is actually failing — after it restarts you've lost the clue. If the cheap test changes it, stop and reassess. If you share a photo of the worksheet, easier to sanity-check. Checking again after work.

I wouldn't throw parts yet. Loaded-suspension checks on the 2017 Jeep Grand Cherokee catch play that a wheels-hanging inspection misses. Save the big job until that test fails. Learned this the expensive way on a previous car. I've seen both outcomes, which is why I'd test instead of assume. I'd rather look cautious in this thread than stuck later.

Cleared nothing. I want service to see the alert on the 2017 Jeep Grand Cherokee first. Might be overthinking it, but I'd rather overthink than overspend.

Ask what changed right before it started. Get a real battery/charging test on the 2017 Jeep Grand Cherokee, not just resting voltage, before blaming a module. That's the branch I'd chase this week. A shop burned me once by skipping that step. I'd rather look cautious in this thread than stuck later.

Log the conditions before you spend. Capture voltage while the 2017 Jeep Grand Cherokee is actually failing — after it restarts you've lost the clue. If the cheap test changes it, stop and reassess. On “surface rust underneath a winter daily,” that was the fork that mattered for me. A shop burned me once by skipping that step. If that fails I'll eat the diagnostic fee.

Start with the test that can prove you wrong. A pressure test beats staring at a dry driveway if the 2017 Jeep Grand Cherokee is losing coolant with no puddle. If the cheap test changes it, stop and reassess. Verbal 'we'll take care of it' is not a plan. I've seen both outcomes, which is why I'd test instead of assume. Checking again after work.