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Jay
Jay, Certified Infiniti Technician
Category: Infiniti
Satisfied Customers: 3517
Experience:  20+years, Nissan and Infiniti experience and currently now working for a Infiniti Dealer
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I REPLACED THE BATTERY IN MY 2008 Infiniti M35 3.5 L 3498 CC

Customer Question

HELLO , I REPLACED THE BATTERY IN MY 2008 Infiniti M35 3.5 L 3498 CC V6 DOHC 24 Valve AND NOW IT WONT START
JA: Will the headlights turn on? Is the battery fully charged?
Customer: THE BATTERY IN NEW AND FULL CHARGE , HEAD LAMP WORK
JA: Are you fixing your M35 yourself? What have you tried so far?
Customer: NOTHING REALY, JUST INSTALLED NEW BATTERY
JA: Anything else you want the mechanic to know before I connect you?
Customer: NO
Submitted: 3 months ago.
Category: Infiniti
Expert:  Jay replied 3 months ago.

Hello my name is ***** ***** thank you for your question.

If you do not step on the brake pedal and press the start button 2 times, does all the dash warning lights come on?

Also did you try inserting the remote into the fob slot?

Customer: replied 3 months ago.
NO LASH LIGHTS, NO KEY SLOT FOR FOB
Customer: replied 3 months ago.
SORRY DASH LIGHTS
Customer: replied 3 months ago.
I found slot for key fob. Owner said it did not have one
Customer: replied 3 months ago.
Hello
Customer: replied 3 months ago.
I AM REPLACE BATTERY IN KEY FOB
Customer: replied 3 months ago.
JAY OPT OUT
Expert:  Jay replied 3 months ago.

Does the car start with the key in the slot? if it does, then I would change the remote battery

Customer: replied 3 months ago.
IT DOES NOT START AND I REPLACED THE REMOTE BATTERY
Expert:  Jay replied 3 months ago.

Does the ignition come on at all?

Customer: replied 3 months ago.
NO
Expert:  Jay replied 3 months ago.

Does the dome light work? does anything besides the headlights work electrically?

Customer: replied 3 months ago.
DOME LIGHT WORKS
NOTHING , ELSE
NO DASH, NO SCAN TOOL, HORN WORKS
Customer: replied 3 months ago.
CHECKED ALL THE FUSES AT THE BATTERY ALL GOOD
Expert:  Jay replied 3 months ago.

oh boy.. ok.. I think I may know what the issue is. Hang on while I explain

Expert:  Jay replied 3 months ago.

These cars are very sensitive on how you install the battery. Meaning the order of the battery terminals. If you installed negative first, then positive, it will cause a voltage surge which can damage control units. Which can leave you in this type of situation. The only way to figure this out is to remove the cluster and manually power the PDU which will allow the ignition to come on to then do a system call with a scanner to determine which control units may have been damaged. That is the only way once you have caused a voltage surge.

Do you have any more questions on this?

Expert:  Jay replied 3 months ago.

Oh is the steering wheel locked?