QuestionWe recently purchased a 2000 Discovery. These are my problems
1. The gas gauge needle is inaccurate and jumps when I hit a bump in the road and the speedometer is inaccurate.
2. My rear driver door lock will not lock unless it is manually pushed down and will only unlock by using the door handle.
3. the front passenger seat adjuster (for the back) does not work all the time.
Can all of this be related? My remote does not work at all and after reading through all of the posted questions and answers, I am completely overwhlemed by how to program or code...can you offer any advice?
AnswerHi Melanie,
no, they are not all related.
The fuel gauge problem is known within LR and it's most likely the sending unit within the fuel pump that must be replaced. At the bottom of this message is a Technical Service Bulletin that I found (thanks Chris).
The speedometer inaccuracy is rare but could be speed sensor fault or maybe your alternator is starting to act up. Just in case, this can be tested at most Advance Auto parts shops. They'll do this for free (usually): test the output of your alternator and measure the strength of your battery.
The rear door locks on LR Disco's series I and II have a few problems. In your case, your series II Disco could have a wiring problem (short, disconnected, corrosion) or the latch and sensor itself is faulty. It can affect the remote and can even be related to a problem within the security ECU.
The seat adjustment device appears to be need service. This is rare and I think the first time someone has had trouble with this.
All of these problems are best left to a LR expert. If you can find an independent mechanic who services LR's, you may save yourself some labour charges. Otherwise, if you are unsure, find a LR dealership that you can trust and arrange to have the repairs done. Get estimates first and always in writing.
TSB Fuel Gauge:
No: 86/15/03/NAS
Ref: Issue: 1
Date: 12/05/03
Intermittent Fuel Gauge Operation
AFFECTED VEHICLE RANGE:
Discovery Series II (LT) 1A290237 onward
SITUATION:
INTERMITTENT OPERATION OF FUEL GAUGE
One or more of the following symptoms may be experienced often as the result of damage, contamination or improper adjustment of the fuel sender:
^ Fuel gauge reads zero regardless of fuel level in tank
^ Gauge shows a constant reading with various levels of fuel level in tank
^ The fuel gauge consistently indicates inaccurate fuel levels
^ A MIL illumination is possible
RESOLUTION:
SENDER UNIT INSPECTION AND TROUBLE SHOOTING
Should a customer express concern consistent with any of the above symptoms, use the procedure below to ensure the correct operation of the fuel gauge sender unit. After the specified VIN vehicles equipped with fuel pump assembly WFX101060 do not required replacement of the fuel pump assembly for a sender-related problem detailed above to be repaired.
PARTS INFORMATION:
YAD500010 Sender unit - fuel tank gauge Qty 1
ESR3806 Seal - fuel pump to tank Qty 1
REPAIR PROCEDURE
CONSTANT INACCURATE FUEL GAUGE READING
WARNING: Fuel vapor is highly flammable and in confined spaces is also explosive and toxic. Always have a fire extinguisher containing foam, CO2, gas or powder close at hand when handling or draining fuel.
1. If the fuel gauge is constantly reading empty or consistently reads another level, replace the unit as follows:
^ Refer to RAVE section 19.45.08 and remove the fuel pump assembly..
^ Disconnect two red wires from the top of the fuel pump assembly. (Arrowed in Figure 1).
^ Release two spring clips securing the sender unit to the fuel pump assembly. (Figure 2)
^ Remove the sender unit.
CAUTION: Both spring clips must be securely engaged on the sender unit in the fuel pump assembly.
2. Position the new sender unit (YAD500010) into the location slots and engage the spring clips.
3. Connect the two red wires to the top of the fuel pump assembly.
4. Refer to RAVE section 19.45.08 and install the fuel pump assembly to the tank using a new seal (ESR3806).
RANDOM INACCURATE FUEL GAUGE READINGS
1. Refer to RAVE section 19.45.08 and remove the fuel pump assembly.
2. Inspect the fuel pump assembly for external damage, such as a distorted sender unit float arm.
3. If no visual defects can be seen, disconnect two red wires from the top of the fuel pump assembly. (Arrowed in Figure 1)
4. Connect a DVOM set to the "1K ohm" or "auto-range" scale to the "red" sender terminals.
5. Place the fuel pump assembly upright on a flat level surface.
6. With the float in the rest position, measure the distance from the surface to the base of the float. ("A" in Figure 3)
7. With the float arm still in the rest position, note the resistance at the sender unit connectors.
8. With the meter still connected, raise the float arm slowly to its highest position, and monitor the meter for a smooth fall in resistance.
9. If the meter detects an open circuit condition at any point in the float arm travel, replace the sender unit.
10. Measure and note the resistance at the highest level
11. With the float arm in its highest position, measure the distance from the surface to the base of the float. ("B" in Figure 3)
12. Compare the measurements and resistance values obtained in steps 6 through 11 with the chart.
NOTE: Minor adjustments can be made to the position of the float by carefully bending the float arm.
13. If resistance and dimensional measurements are slightly out of tolerance, gently bend the float arm in the required direction to obtain measurements within tolerance.
14. Repeat the measurement process to verify that the corrective action was successful.
15. If the measured resistance remains outside the specified range, install a replacement sender unit (YAD500010).
16. Install the fuel pump assembly to the tank using a new seal (ESR3806).
