M & S lights flashing
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Winching
Joined: Jun 2010
Posts: 676
Likes: 0
From: Florida
Mine has no slash thru the D on the dash but it does flash along with the M & S lights. As for the transmission I had it serviced around 15,000 miles ago, along with all of the other 60,000 mile requirements.
TReK
Joined: Nov 2011
Posts: 2,748
Likes: 506
From: Seattle, Wa
I just had the flashing M & S lights and D (limp mode)... upon inspection found my Interstate battery was the original to the truck last hole punched being 2002!
Found an online deal at Firestone for the exact same battery for 79.99 + fees and taxes. no brainer.
new battery put the lights back to normal and as a bonus a few other minor issues went away. I was having what seemed like the tranny shifting later than it should intermittently... hasn't happened since the new battery, and I have no explanation but the truck seems to run smoother and stronger too.
Found an online deal at Firestone for the exact same battery for 79.99 + fees and taxes. no brainer.
new battery put the lights back to normal and as a bonus a few other minor issues went away. I was having what seemed like the tranny shifting later than it should intermittently... hasn't happened since the new battery, and I have no explanation but the truck seems to run smoother and stronger too.
Super Moderator
Joined: Jan 2011
Posts: 16,322
Likes: 88
From: Savannah Georgia
Dave03S:
from the RAVE shop manual about the tranny ECU
M&S Light = On
Sounds like your new battery was just what the doctor ordered. The electronic transmission detects the wimpy battery before the radio goes dead....
from the RAVE shop manual about the tranny ECU
P1562 * Battery supply below 9V while engine running
Maintains current gear in low range, limp home mode in range. Shift pressure to
maximum, harsh gear shifts/engagement.
Check engine light = Off Maintains current gear in low range, limp home mode in range. Shift pressure to
maximum, harsh gear shifts/engagement.
M&S Light = On
Sounds like your new battery was just what the doctor ordered. The electronic transmission detects the wimpy battery before the radio goes dead....
Overlanding
Joined: Nov 2009
Posts: 22
Likes: 0
From: (Bonita) San Diego, CA.
sounds like the xyz is bad. u live in florida. my guess is you use the air con often. the drain drips directly on the xyz. so unless they rerouted the drain out very well could have failed again. it can be rebuilt. it's a mechanical switch. it fills with water and contacts become soiled.
Super Moderator
Joined: Jan 2011
Posts: 16,322
Likes: 88
From: Savannah Georgia
Driver's side of transmission. Where a design issue allows AC condensate drain to keep in wet. Muck builds up inside. Can be removed, rivits drilled out, cleaned up, etc. It has a series of metal switch contacts that tell the tranny ECU what selection you have commanded.
Overlanding
Joined: Nov 2009
Posts: 22
Likes: 0
From: (Bonita) San Diego, CA.
Driver's side of transmission. Where a design issue allows AC condensate drain to keep in wet. Muck builds up inside. Can be removed, rivits drilled out, cleaned up, etc. It has a series of metal switch contacts that tell the tranny ECU what selection you have commanded.
Thank you for the info... Sounds like AKA, "Neutral Safety Switch".
Rock Crawling
Joined: Jul 2019
Posts: 261
Likes: 19
From: Dallas Texas
It is most likely NOT the XYZ switch.
A blinking M and S light alone will indicate low voltage / battery under proper voltage. The condition may be intermittent.
Replace or have your alternator and battery tested.
IF it is the XYZ switch failing as a result of drainage from the AC drains, the gear display will also show a capital D with a slash through it, and it will also be flashing in conjunction with the M and S lights.
Don't replace the XYZ switch if you don't have to. This is just from my personal experiences with the same flashing lights.
A blinking M and S light alone will indicate low voltage / battery under proper voltage. The condition may be intermittent.
Replace or have your alternator and battery tested.
IF it is the XYZ switch failing as a result of drainage from the AC drains, the gear display will also show a capital D with a slash through it, and it will also be flashing in conjunction with the M and S lights.
Don't replace the XYZ switch if you don't have to. This is just from my personal experiences with the same flashing lights.
Rock Crawling
Joined: Jul 2019
Posts: 261
Likes: 19
From: Dallas Texas
what was your outcome ... I just got this issue (no slash)
Camel Trophy
Joined: May 2016
Posts: 3,969
Likes: 859
From: Britainistan, UK
@Carlos Man … you need to get the trouble codes read with a diagnostic tester preferably a dedicated Land Rover tester. If not, it's a guessing game to find the source of the problem.
Post your fault codes on your other post.
Post your fault codes on your other post.
Last edited by JUKE179r; Jan 9, 2020 at 04:07 AM.