Dreaded M&S lights with no crank

MNTundra

Member
Feb 2, 2020
16
3
Minnesota
I haven’t posted in awhile! But last time you guys helped me a lot with my issue! Unfortunately I sold my 2004 Disco II and I was really itching to get another one. All the sudden I was driving on the interstate one day and I found one for $350 on the side of the road and I had to snatch it up. I can post some photos of how it was! But it has some issues. (Of course it will for $350). There also was a surprise in the air box.

Car Info: 1999 Land Rover Discovery II, 199,000 miles.

Issues: When I got the car it was sitting for a year outside not running. It did not have a belt on it and the fluids looked okay. Put a new battery in it, new belt, and a new alternator. I’ve been trying to start it but I can’t get the key out of the ignition and what has been showing up is the M&S lights, oil light and service engine soon light. I’ll attach a link I have on YouTube below. I checked the Codes and found two pending ones, P0722 (Output Speed Sensor Circuit) and P0705 (Transmission Range Sensor A). I’ve been researching online that this indicates bad voltage to the car but I’ve been digging around with a multimeter and haven’t found anything array. Also the X,Y,Z switch but I haven’t dug into that project yet to go and check it out. Do you guys have any suggestions? I really love these Discos and want this one to come back to life! I can also post more photos if you want to see how it looks. #DiscoIsntDead

 

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JUKE179r

Well-known member
Sep 14, 2016
508
44
Suffolk, UK
At least with a ‘99 you should have a CDL nipple. (y)

After sitting for over a year, definitely start with a fresh battery or a powerful jump pack. Also check all battery cable connections going to and from are tight and not corroded or frayed.
 

mlnnc

Well-known member
Mar 23, 2008
217
11
Charlotte
Even though the truck has a new battery, double check the connections, including the other ends of the battery cables (both positive and ground, especially on the starter). Loosen them slightly and move them around a little to "scratch" the surfaces, then retighten.

As far as not being able to remove the key from the ignition, that happened to me the first night of a week-long vacation to Massachusetts years and years ago. Happily I had a second key with me to use in the door lock, but it was weird to leave the truck parked with a key clearly visible in the ignition switch all week.

Among other things, a bad or misadjusted XYZ switch can prevent the key from being removed. If the BCU doesn't "see" the XYZ signalling that the shifter and trans are in Park the BCU won't release the key. Do the LCD in the instrument panel and the red LEDs on the shifter bezel indicate the truck is in Park?
 

MNTundra

Member
Feb 2, 2020
16
3
Minnesota
I sprayed WD40 on the ground nuts and retightened them and checked all the connections they were all tight! Still not starting for some reason. Also there is no indication lights coming on for the transmission. I put a brand new battery in also! Just no start! Also had a really weird humming sound when on ignition cycle 2 but when I try to start it the humming goes away. Thank you guys!
D48BB764-7361-4EB3-9623-37F2FD236D26.jpegC2E2F8A2-F7A2-4A63-83DA-A078C378D2B1.jpeg
 

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4Runner

Well-known member
May 24, 2007
436
22
Boise Idaho
By not starting, I assume you mean a no cranking problem. Will it crank when you are in neutral? It almost sound like the Rover doesn’t think you are in park. That may be why it won’t crank or release the key. Just a thought.
 

MNTundra

Member
Feb 2, 2020
16
3
Minnesota
Thank you! I’ll tackle the x,y,z switch and try to clean it out first before I order one. Yes, it doesn’t crank in either position. That’s what I’m thinking also with it not being in park. The park is not even illuminate on the shifter. I’m thinking it has to be the x,y,z.
 

mlnnc

Well-known member
Mar 23, 2008
217
11
Charlotte

MNTundra

Member
Feb 2, 2020
16
3
Minnesota
Hi it’s been awhile but I finally had time to get after my project. I cleaned the contacts and the took out the xyz switch. I had it in neutral when I was taking it out. I decided to take it out first and spray some electrical cleaner on the contacts of the plug first to see if that was the issue and adjusting the switch itself. No luck. So I deceived to break into the switch itself and clean up the switch from the inside. Here is the before picture when I broke into it.9EA90D62-0590-4A36-AFCF-09679AA30038.jpeg
F496B300-D674-4354-954B-C65EA1E19143.jpeg
I noticed that one of the contacts was a little corroded from wear so I cleaned them all up and added some dielectric grease to the switch then riveted them back together. Here’s the cleaner part.A3A78814-ABA7-479B-846E-B56637A258FD.jpeg
I then put it back into the car making sure everything is clean and tity. I tried adjusting it myself but didn’t have anyluck when trying to start it. Should I have someone help me when I’m running through the start procedure? Or should I buy a new switch? Thank you! Really hoping to get this disco up and running!! I’ve been doing other fixes in the mean time.
 

MNTundra

Member
Feb 2, 2020
16
3
Minnesota
So I got the new switch in place and everything positioned correctly I am just struggling with adjusting the switch. I kept the bolts loosened so I could adjust it slightly with another person watching the cluster and the lights never went away. Am I doing something wrong or is there an easier way to do it? I tried putting it in park and neutral when adjusting it. Thank you.
 

MNTundra

Member
Feb 2, 2020
16
3
Minnesota
With the switch I bought from Will I’ve been trying to adjust it with a partner and still no indication on the LCD screen or the shifter bezel. What I have been doing is put the car in neutral and adjusted it that way everytime I adjust it nothing changes for me. Is it the switch I bought or am I just not adjusting it right? I might try and resort to buy the little tool to help adjust. I also have the battery at a full charge when I try and position it. Thank you!
 

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