XYZ/M S Problem

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03-14-2019 | 06:28 PM

rcdoeshair

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Three Wheeling

Joined: May 2017

Posts: 98

Likes: 4

From: Southeast Missouri

XYZ/M S Problem

2000 D2. Have flashing M/S and gear selector lights plus limp mode .I put in a new battery and it solved the problem. Drove it around for a bit and then next day back to original problem. What could cause this? Bad alternator which PO said was new? Any ideas?

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03-14-2019 | 09:23 PM

Best4x4

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Joined: Apr 2015

Posts: 7,750

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From: Beaumont, TX

Any codes? I’d really really really clean those battery terminals, and make absolutely certain they are clamping onto the battery terminals tightly.

If it was the alternator = verify voltage with a meter to quickly check. Engine off = 12.1-12.8v Engine on 13.2-14.1v

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03-14-2019 | 10:01 PM

mollusc

TReK

Joined: Nov 2015

Posts: 3,458

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From: Staten Island, NY

there's a huge table in the rave detailing all the different possible causes for the flashing m&s. reading the transmission error code will go a long way towards a useful diagnosis.

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03-19-2019 | 08:18 PM

stb616

Mudding

Joined: Sep 2014

Posts: 195

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2x on making sure everything is tight. I freaked out thinking my tranny was going, but it was just a loose ground that caused it to trigger limp mode. Rule out the easy/cheap stuff 1st and start digging deeper. Follow the neg cable and make sure it's tight and corrosion free beyond just at the bat terminal.

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