I have a Toyota Avensis 4d 2.0 TD 1998/9 R reg The central locking stopped working after a heavy frost the lights flash as normal and i can open and lock the front door with my key but other doors don't lock? any ideas

did you google for it>?
what car a "Toyota Avensis Hatch (T22)" must i guess car ?
he Avensis is not sold in North America
nor Hilux with that engine.
USA answers, only. no books here on many diesels.
D-4D ECT 101.

google madness.

rav4 with D-4D
http://www.fixya.com/cars/t9541262-finding_location_rav4

ill try to use Toyota oem parts, direct
usa toy parts only is the most difficult to navigate of all.

one guy on ebay sells this part. rare to fail and easy to test.

shows, 15 stat houses and input housing 20
so 30 fits to 20, all with google in 2mins.

check for bad grnd connection also the fuse may look good but still could be bad meter it out to be sure if still blows fuse you have a short in that line

double posted,
Check all fuses... in cab and eng. bay.
try again, again, say what dont work?
key fobs (all) dead??
or keys actual, or what,
what works and what dont. ???????????

central locking is complex. lots of switches fob and doors.
try saying what dont work exactly , instead of just central.......

Use the method of elimination thus check from fuses,loose connections,test circuit relays and finally scan.I recommend that each time you service or need to change a part, have the car scanned first and after the job.Always disconnect battery terminals before working on any sensors etc

Your horn start by checking the fuse.

Did u ever find the problem with your avensis

I will say you are having problem with central locking vacuum module.Either that or you are loosing vacuum in the central locking system some where.Diagnostic procedure can be pain in the ***.I would advise you to locate the Module and follow the lines to each door.If rubber vacuum lines are not thorn,I would go and get to salvage yard and get me another module that would be much cheaper.Also there is two relays.One is for unlocking and other one for locking.Try those first before anything else.Usually humidity and cold could damage them.Hope I could help you.

somehow the car when on valet mode, go to a alarm shop , they should be able to re arm your car without to much damage to your pocket, or read your cars manual, it might inform you on how to fix the problem.

Not a solution just another problem...Lost my car fob key, have a replacement key no circuit. As I open door, sets off immobiliser like above for20 mins. I had someone look under the glove compartment but that got me no joy. How can I (non techy) resolve this so I can drive my baby home...Vreg Avensis1.8 model?
many thanks

could be as simple as the fuse for the locking system.. use your hand-book to find out where the fuses are and check them out