Manual transmission will not shift: loose shift lever bolt
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What causes "Manual transmission will not shift: loose shift lever bolt" on the Mazda Miata NC (2006-2015 US model years), and how is it fixed?
A shift lever bolt works loose and lodges in the shifter area (Mazda technician tip). Fix: Reinstall the shift lever bolts and torque them to 7.8-11 N·m.
Symptoms
The car suddenly will not go into gear.
Cause
A shift lever bolt works loose and lodges in the shifter area (Mazda technician tip).
Fix (summary)
Reinstall the shift lever bolts and torque them to 7.8-11 N·m. Source is a Mazda M-Tip rather than a numbered TSB, so held at tier 2.
Other NC problems
- Recall 06V-103: driver airbag horn-assembly bolt (early 2006 cars)
- Plastic coolant expansion tank cracks and dumps coolant
- Plugged soft-top drains put water in the footwells (2006-2009 TSB)
- PRHT crunches or is hard to open (2007 TSB 09-038/07)
- PRHT windshield header and roof rattle (2007-2008 TSB 09-035/08)
- PRHT front roof panel contacts the deck when open (2007 TSB 09-035/07)
More for this car
- All Mazda Miata NC (2006-2015 US model years) fitment answers · NC common problems
- Newsletter archive: past issues with every new and corrected entry
Sources
- Mazda M-Tip: 2006-2013 MX-5 manual transmission will not shift (2013) — Mazda North American Operations (M-Tip technician tip) (mfr spec; read 2026-10-26; full page read)
Summaries are in our own words. Not repair instructions; consult the factory service manual.
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