Car has no crank, no start, no dash

3.0L • TURBO • AUTOMATIC
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CONNOR KEY
  • MEMBER
  • 2 POSTS
Hey there whenever I put the key in the ignition and try to start it it’s dead silent, I’ve checked the relay and it clicks, tested the ground and it’s good and I’ve replaced the battery
Sep 19, 2026 at 12:14 PM

What to check next

Diagnostic guidance. Suggested checks and possible repairs are separate from the owner's reported results.

First confirm whether the dashboard is completely unpowered or simply does not respond to the key. Check that the replacement battery is charged and its connections are secure. A relay clicking does not establish that its load circuit works. Have the battery feeds, main power distribution and engine/body grounds checked under the appropriate load. A ground can pass a simple continuity check yet fail under load. Use the vehicle's designated test points and wiring information rather than improvising a jumper connection to arbitrary engine metal. If power and grounds are sound, continue with ignition supply, start authorization and starter-command diagnosis using a compatible scan tool. Repairing a demonstrated connection fault may restore operation without replacing the starter or control modules.

Guidance references and applicability

Fluke: Diagnosing voltage drops https://www.fluke.com/en/learn/blog/automotive/electrical-automotive-troubleshooting Supports electrical testing under operating load. This is general testing guidance, not the wiring diagram or start-authorization procedure for this vehicle.

Read the replies · Discussion summary and reported outcome

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MECHTRIX
  • ✓Experienced Mechanic
  • 554 POSTS
Ive seen this many times ..so Id say test it this way...If you connect a jumper cable from any metal part of the engine a bracket a bolt anywhere you can clamp onto the engines metal .. and the other end to the negetive jump start terminal i believe on the drivers side then try to start it... if it starts your ground strap between the body and the engine is bad somtimes you can take it off a nd clean it real good sand paper on the ends and where it connects to the engine and the frame rail but most time I just replace them .. ..comon one these bmw cars they used a braided copper cable type ground cable that bolts to the frame rail and usually looks good there but if you follow it down to where its bolted to the engine/bell housing area thats where they tend to get corroded becuase its down on the bottom where lot of rain water and other road scum buils up on it and corrodes it ive seen it many times over the years on lots of German vehicles ..so yeah id say try this and let us know what you find good luck hope this helps
Sep 19, 2026 at 6:54 PM
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CONNOR KEY
  • MEMBER
  • 2 POSTS
Thank you so much I’ll definitely try this out and let you know ASAP
Sep 19, 2026 at 7:39 PM
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MECHTRIX
  • ✓Experienced Mechanic
  • 554 POSTS
Yep "Always Glad to help anytime

hope this works out for you good luck.
Sep 20, 2026 at 3:14 PM

Discussion summary

Car has no crank, no start, no dash

The title reports no cranking, starting or dashboard operation. The owner described silence when attempting to start, a clicking relay, a ground they had checked and a replacement battery. A contributor suspected the engine-to-body ground strap. The owner planned to investigate, but no result followed.

Reported outcome: No ground-strap test result, diagnosed fault or restored starting was reported.

The ground-test method and extent of dashboard power loss were not described. A failed ground strap is a possibility, not an established diagnosis.

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