Land Rover Repair: 2001 Disco II M & S lights, discovery series ii, neutral safety switch

Question
My rover recently displayed the "Service engine soon" light.  The same day, later, it would not start.  When it did start,after many tries, the Manual and Sport mode warning lights were flashing.  I shut it off and restarted it.  The lights were out.  Today the same thing happened.  Any ideas?
thanks

Answer
Hi Nicky,

here is a LR technical bulletin I found for you:

No: 86/04/03/NAS
Ref:Issue: 1
Date: 05/02/03

Sport and Manual Mode Light Illuminated

AFFECTED VEHICLE RANGE:

Discovery Series II (LT) up to 2A740268

SITUATION:

UNEXPLAINED ILLUMINATION OF SPORT OR MANUAL MODE INSTRUMENT LIGHTS

The customer may complain that the "S" or "M" symbols for the transmission are illuminated without having changed the shift mode. Water may enter the gearbox starter inhibitor switch harness connector via the harness joint causing this symptom.

RESOLUTION:

INSTALL NEW NEUTRAL SAFETY SWITCH AND HARNESS

When the customer complaint has been verified, investigate the source of the problem and, if indicated by the inspection, replace the harness and switch.

PARTS INFORMATION:

YMD001180 Harness - gearbox Qty 1 Without diff lock and with Interlock (NAS)
UHB100190 Switch, neutral safety Qty 1

WARRANTY CLAIMS:

86.70.20 Time: 0.90 Hrs
Replace gearbox harness

44.15.19 Time: 0.30 Hrs
Replace start inhibit/neutral safety switch

FAULT CODE: L

Normal warranty policy and procedures apply.
Material allowance is included in labor operation.

REPAIR PROCEDURE

INSPECT FOR CORROSION

1. Refer to the RAVE Electrical Library connector view C0675 to identify the start inhibit/neutral safety switch connector location.

2. Inspect the switch harness connector C0675, for corrosion. (Figure 1)


REPLACE STARTER INHIBITOR SWITCH AND HARNESS

1. If corrosion is evident, refer to the RAVE Workshop Manual section 44.15.19 and replace the start inhibit/neutral safety switch. (Figure 1)

CAUTION: The harness multi-plug must only be installed after the new harness is installed.

2. Refer to the RAVE Workshop Manual section 76.25.01 and remove the center console.

3. Disconnect 3 multi-plugs and 2 connectors on the gearbox harness from the gearbox and the transfer box.

4. Disconnect the 3 gearbox harness multi-plugs from the main harness.

5. Feed the gearbox harness through the tunnel and remove the old harness from the vehicle.

6. Feed the new harness through the tunnel and secure the grommet.

7. Connect multi-plugs to the main harness.

8. Install the center console.

9. Connect the 3 gearbox harness multi-plugs and 2 connectors to the gearbox.


I hope this helps. It may be that this is your problem.  It may also be that your electronic transmission has other troubles.  Best to have this inspected by an experienced LR mechanic.

Regards,

JohnMc