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sprinkles08, ASE Certified Technician
Category: BMW
Satisfied Customers: 21433
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
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Won't start, Thought that was the problem and just replaced

Customer Question

Won't start
JA: Have you checked the battery, particularly the terminal connections? Are they corroded?
Customer: Thought that was the problem and just replaced it. Only get a click noise at the shifter
JA: What is the model/year of your BMW?
Customer: 2008 X5 3.0
JA: Are you fixing your X5 yourself? What have you tried so far?
Customer: The Bart, tried rocking but am stuck at a Lowe's parking lot
JA: Anything else you want the mechanic to know before I connect you?
Customer: Before I left the house it would not start but when I tried it a second time it did start, just figured it was the battery
Submitted: 1 month ago.
Category: BMW
Expert:  Chad Farhat replied 1 month ago.

Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

Expert:  Chad Farhat replied 1 month ago.

have you checked




Please let me know

Thank You

Chad Farhat

ASE Certified Technician

Expert:  Chad Farhat replied 1 month ago.

Starter get fed 12 volt from battery and grounds from the car access system ,i sent you the circuit diagram showing the connection

Customer: replied 1 month ago.
Just noticed that when I try to release the parking brake it and am pressing down on the brake it is saying to step on the brake
Expert:  Chad Farhat replied 1 month ago.

check for 12 volt on battery

check for 14 volts if you get it running again .

check starter itself, you can take it out and bench tested.

i would check all my ground connection on engine block to frame,

do you have any aftermarket system in it ?

Customer: replied 1 month ago.
No aftermarket, what about the brake pedal relay
Expert:  Chad Farhat replied 1 month ago.

there is no relay for brake pedal

can you get scan ran on it

Customer: replied 1 month ago.
Then why do I have to press the brake pedal in order to start the car
Expert:  sprinkles08 replied 1 month ago.

Hello and welcome to JustAnswer!

A relay is a device that switches a high current power source to a load on signal from another component. What you're concerned with is the brake switch. The brake switch sends a signal when the pedal is pressed. If you're still seeing a message to press the brake even after it has pressed then the brake switch signal is not being seen. You can visually inspect the switch and wiring and test the switch itself with an ohm meter, if nothing is found then a scan tool would be need to diagnose the issue.

Customer: replied 1 month ago.
Turned out to be a bad starter
Expert:  sprinkles08 replied 1 month ago.

I'm glad you got it repaired.

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