Well at this stage do the following
On cold vehicle disassemble the battery pack and remove the smr assembly and see for the corrosion on copper jointers if present then service the smr assembly
2: rebuild the whole fromt suspension.
Replace the following.
Balljoints
Rackends
Tie rod ends
Zlinks
Lower arm bushes and etc
And fromt shocks.
As per engine service.
Service the EGR line with valve
CAT converter
Spark plugs
Intake manifold
Throttle service
Brake service
Front pass
Rear brake pads
Brake oil flushing complete
Transmission fluid
Inverter coolant
Engine coolant
If possible front radiator and condenser fins service
Complete check of electronic system and recalibration.