# 2003 Mitsubishi Montero Sport - Transmission Drops Gear

**URL:** <https://community.cartalk.com/t/2003-mitsubishi-montero-sport-transmission-drops-gear/147605>\
**Category:** Maintenance/Repairs\
**Created:** [August 27, 2019, 3:55pm UTC](https://community.cartalk.com/t/2003-mitsubishi-montero-sport-transmission-drops-gear/147605 "2019-08-27T15:55:04Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![gar02](https://avatars.discourse-cdn.com/v4/letter/g/c67d28/32.png) [@gar02](https://community.cartalk.com/u/gar02)\
**Post date:** [August 27, 2019, 3:55pm UTC](https://community.cartalk.com/t/2003-mitsubishi-montero-sport-transmission-drops-gear/147605/1 "2019-08-27T15:55:04Z")

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Transmission dropping down a gear at highway speeds for no known reason

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**Author:** ![PvtPublic](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/pvtpublic/32/13089_2.png) [@PvtPublic](https://community.cartalk.com/u/PvtPublic)\
**Post date:** [August 28, 2019, 9:05am UTC](https://community.cartalk.com/t/2003-mitsubishi-montero-sport-transmission-drops-gear/147605/2 "2019-08-28T09:05:38Z")

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Thanks for the info. Won’t be looking to buy one of those.

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**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\
**Post date:** [August 28, 2019, 12:26pm UTC](https://community.cartalk.com/t/2003-mitsubishi-montero-sport-transmission-drops-gear/147605/3 "2019-08-28T12:26:35Z")

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A low level of trans fluid can cause that problem. Have you checked the trans dipstick?

When was the last time that the trans fluid was changed? In view of the vehicle’s age, that maintenance service should have been done 5 times so far.