Hyundai Terracan 2.9 crdi turbo diesel will not start fault codes P1119,P1120, P1640

It is usually within the Body Control Module and not removable or you may have an aftermarket alarm which could be anywhere.

its a common rail diesel so have you got a check engine light showing? if so the obd fault code is the clue if not what was the origional reason why you have changed the injectors? some common rail diesels need to have injection correction factors changed in to the engine control module by diagnostic equipment. if you renew or change them

Hello
When you are having this faulty code P1640 Main Relay Control Circuit.

To solve this open your Engine Bay Fuse box,
look for the relay named CRI and fuse CRI ECU remove any of this fuse or relay.
Then start your car for 5 mins.
Switch off and dragonize it again.

fault code is solved.

P710 is a Transmission fluid temperature sensor fault. Can be low or dirty fluid , stuck cooling system on transmission , damage on circuit of sensor or sensor .
P100 its a MAS/MAF problem - maybe fix that a cleaning sensor by brake cleaner or special spray . if not maybe You need change this part. With EGR - this valve in diesel motors sometimes is just dirty and stuck from carbon and other junk - check a movement on this and shape of valve .Also electrical motor on this valve can be broken then will not cheap repair...Hope is not:)
Inlet metering is conected probably with MAS/MAF- fix this first

Check for 12V on the horn feed wire while someone tries to sound it, if it's there, replace the horn

Yes i have worked on these vehicles but never come across this before ,check the glow plugs and the relay to check their all working which i suspect that either the relay/timer is faulty or all 4 glow plugs are gone ,failing which you may need to return the vehicle to the dealer to have the computer re-flashed but i suspect a faulty timer relay or on a 2003 vehicle all four glow plugs are burnt out ,not difficult to change though as their on the top of the engine

With this code I has contact many times - mostly solutions woz change injectors . If this not help then can be problem with wornout pomp - cost a fortune :(
I hope injectors fix a problem

HOW ARE THE BRAKES WORKING FOR YOU THIS MAY BE A ANTI-LOCK BRAKE PROBLEM HOW HEAVY WAS THE BOAT YOU WERE TOWING, & DID YOU HAVE ANY PROBLEMS STOPPING WHILE YOU WERE TOWING THE BOAT?

HI

Where is the alarm box for the hyundai terracan 2.9 crdi diesel automatic

dear friend-it is very difficult to explain myself in a text. I would say ignore the fault codes at hand for a while untill we have a definate fault. I would like you to make sure that the battery is fully charged, when you carry out the next exercise. I want you to try and start it with quick start, but please do not crank to long, gentle squirts will do it. If no joy, then we must go live chat- I am sure it will work, but please come back to me