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sprinkles08, ASE Certified Technician
Category: BMW
Satisfied Customers: 22802
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
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Have a 2009 328i with 57000 miles. I tried to replace the

Customer Question

Have a 2009 328i with 57000 miles. I tried to replace the ground strap on car but when I cranked the engine. It wouldn't start and now the headlights don't turn on, among other problems
JA: Have you checked the fuses? Have you checked the bulbs?
Customer: No
JA: Are you fixing your 328i yourself? What have you tried so far?
Customer: Disconnecting the negative battery terminal and reconnecting
JA: Anything else you want the mechanic to know before I connect you?
Customer: The windshield wipers turn on without me doing anything
Submitted: 10 months ago.
Category: BMW
Expert:  sprinkles08 replied 10 months ago.

Hello and welcome to JustAnswer!

It sounds as if part of the vehicle may have been left ungrounded after replacing the strap. If the engine is still grounded but chassis is not then that would explain the symptoms.

What is the exact location of the new ground and what was the reason for installing it?
Was an old strap or cable removed? What was it's exact location?