Check engine light

[Johnnymo30]

Hello everyone, I just got two recalls done on my 2021 jeep wrangler 4xe the dealer took it in for 2 days, no harm no foul. After I pick it up though my battery died that same day, and after the battery was fixed that same day my check engine light is back on, does anyone have any suggestions on what I should do, or can jeep do something for me?

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[Bryce]

Needs to get scanned to pull codes to see what threw the CEL. Without knowing the code(s) it's just random guesses.

 

[Johnnymo30]

Needs to get scanned to pull codes to see what threw the CEL. Without knowing the code(s) it's just random guesses.

It’s just super wierd timing

 

[us3r1d]

It’s just super wierd timing

A check engine light after the 95B recall is likely the updated software thinking you need a high-voltage battery replacement.

 

[Johnnymo30]

A check engine light after the 95B recall is likely the updated software thinking you need a high-voltage battery replacement.

I did have to replace my battery lmao right after the same day

 

[us3r1d]

A check engine light after the 95B recall is likely the updated software thinking you need a high-voltage battery replacement.

If the battery you mentioned being replaced _was_ the HV battery, the a check engine light after an HV battery replacement is likely the tech failing to refill/bleed the coolant system correctly.

 

[alphawolff]

If the battery you mentioned being replaced _was_ the HV battery, the a check engine light after an HV battery replacement is likely the tech failing to refill/bleed the coolant system correctly.

Assuming the HV battery was replaced I second this. Bleeding it requires a special tool that isn't indicated anywhere in the service procedures. Most will fill it and run the bleed routine then think it's good to go.

Take a quick peek under the hood and see if the second from the front coolant reservoir on the driver side is empty.

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