Check engine light at 900 miles

[1Evil55]

I have a 2017 Jeep Grand Cherokee Limited. I replaced both batteries last year in April. They were the original factory batteries. The car has a main battery and a start/stop auxiliary battery (size of a motorcycle battery). They put both batteries under the passenger front seat. It takes about a half hour to access and remove them. My car was needing to be jumped after only 2 days of sitting. I had a 3 year full warranty from Auto Zone and replaced the main battery. I 99% of the time turn off the stop/start function. I took the car to the dealer, when the car died again with a new/replaced battery. It ends up (of course) that the aux. battery was not holding a charge and it affects the main battery. Car has had no problems since. Prices are crazy to replace 2 batteries. main battery $250/ aux battery 120 1hr labor $160....total cost $530. getting access to the batteries in these cars has become a project. I can pull and replace a battery in my 1967 Cadillac in less than 5 minutes.

The aux battery of any Jeep is in the category of 10 of the dumbest engineering fails of the century.

 

[Finally-a-V]

My wife just replaced her 4 1/2 YO battery in her RAV4. It was around $210 at Autozone. That was one of the less expensive choices. She could have spent close to $300. Guy said batteries don't last much more than 3 years any more, especially here in AZ.

 

[dinkman]

My wife just replaced her 4 1/2 YO battery in her RAV4. It was around $210 at Autozone. That was one of the less expensive choices. She could have spent close to $300. Guy said batteries don't last much more than 3 years any more, especially here in AZ.

meh you get what you pay for .... the battery in my 2011 r8 was original and still very strong

 

[1Evil55]

meh you get what you pay for .... the battery in my 2011 r8 was original and still very strong

Back in the good ol days when they made batteries last..

 

[Finally-a-V]

@dinkman ...yes, somewhat true. My 6 yo battery in my Expedition is good and still kicking. The heat just kills batteries out here, especially with her car sitting outside at work all day.

 

[FLYARMY]

Just replaced my 2014 Challengers 6 1/2 year old battery. Paid $325 for an OEM MOPAR battery. The battery price doubled since 6 years ago.