I inherited a 2010 LR4 that has slight fire damage by the battery. Claims it was a fuel leak on the fuel pressure sensor and it was put out quickly. I was advised to get a air compressor and put air in it with soapy water to find the culprit. Do you concur? Where should I put the air into? How do I safely release pressure in this high pressure line before I attempt to loosen anything?

Second, the vehicles suspension is all the way deflated and I cannot raise it. I want to see if the vehicle can even do so. I have a gap lld tool and I try to adjust it from there but nothing. I selected height control and it just says suspension fault on the dash. Then I go to test valves and nothing happens. I cannot start the car, but the battery is fully charged and hooked up to a charger to keep it charged. Update: the fuse was busted. Was able to raise it, will see if it deflates overnight and what not.

these are the faults im getting:L319 - LR4 2010
Vehicle scanned on 21-02-2023 20:14
Using IIDTool BT V3.0 B2643

ABS-Brake Module

• U0421-68 (28) Invalid data received from ride level control module - Algorithm based failure - event information
  ( on 21-02-2023 20:08:18 at 254155 km )

DDM-Driver Door

• B109C-15 (2F) Front courtesy lamps - General electrical failure - circuit short to battery or open
  ( on 18-02-2023 01:02:44 at 254155 km )
• B110A-11 (6C) Rear door driver side central locking motor - General electrical failure - circuit short to ground
  ( on 18-02-2023 01:01:53 at 254155 km )

IPC-Instrument Pack

• B1A85-96 (2C) Ambient light sensor circuit - Component failure - internal failure
  ( at 254155 km )

PDM-Passenger Door

• B110B-11 (6C) Rear door passenger side central locking motor - General electrical failure - circuit short to ground
  ( on 18-02-2023 01:01:53 at 254155 km )

RLM-Suspension

• C1A30-64 (AF) Both switches pressed at the same time - Algorithm based failure - signal plausibility failure
  ( on 18-02-2023 00:50:11 at 254155 km ) Update: code cleared

TCM-Transmission 6spd

• U0401-64 (2F) Invalid data received from engine control module/powertrain control module - Algorithm based failure - signal plausibility failure
  ( on 18-02-2023 00:47:53 at 254155 km )

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The main wire harnesses are there and I reckon damaged. As for fuel pressure release, remove the fuel pump fuse and crank the engine until it dies.