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sebastianschulze6

Laguna Gear Shift Indicator Failure

My 2009 Renault Laguna (gasoline engine) has a malfunctioning gear shift indicator display. I can't engage the gears, and the automatic transmission shifts erratically, with slippage, unclean shifts, and grinding noises. Diagnostic testing shows an error, and the gear selection display in the speedometer is dead. I suspect a defective control unit. Has anyone experienced this?

Summary of the thread

A 2009 Renault Laguna is experiencing a malfunctioning gear shift indicator display, erratic automatic transmission shifts, slippage, unclean shifts, and grinding noises. Diagnostic testing points to a fault with the transmission control module. A similar issue was resolved by replacing the control unit at a specialized workshop, which is suggested as the solution.

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4 comment(s)

milaschmidt1

Wow, that sounds rough. I've got a Laguna too. Similar issues cropped up for me a while back. Was the error code related to the transmission control module, by any chance?

sebastianschulze6 (community.author)

Yes, the error code indicates a fault with the transmission control module. Could you elaborate on the specifics of the issues you encountered? Did you experience all the same symptoms?

milaschmidt1

Yep, pretty much the same song and dance. Gear indicator went haywire, shifting felt like a lottery, and the grinding noise was hard to ignore. I bit the bullet and took it to a workshop specializing in automotive electronics. They confirmed the control unit issue. It's not a cheap fix, sadly, but it sorted everything out.

sebastianschulze6 (community.author)

Thank you for confirming my suspicions and sharing your experience. I will proceed with taking my vehicle to a reputable workshop for diagnosis and repair of the control unit. It seems my anticipated repair cost of around 1000€ is realistic.

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RENAULT

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LAGUNA