It a bit hard without knowing any fault codes and I don't know how you would do that on a Ssangyong Rexton . Do you know that transmission model or at least the car's year of manufacture? In any event it may be worth changing the coolant temp sensor as it won't change above 2nd if the coolant temperature is less than 45 degrees and a faulty coolant sensor will indicate a lower temp.

 

this is interesting, the temp gauge on the dash goes happily upto 90 degrees C but if it's a 3 wire (temp to dash, temp to g/b and neg) then that could be a possibility

 

Tried here: Ssangyong Owners Club particularly http://ssangyongclub.co.uk/download/

 

so charged to battery today, checked all the fuse's, only found 1 blown (the front acc socket) got the clock working fine doddgy connection I think, when going through the fuse's I didn't find any obvious gear box fues's, will have to look at the manual, taking a guess I feel that (and I maybe wrong) S2 is stuck open could this be a possibility ?

will get under the car tomorrow want to try and disconnect the wire to the S1 and S2 to see if the car will go into limp mode (3rd gear)

I have found 1 scan-100 diag tool currently for sale for £2050 inc delivery ! I only paid £1000 for the car if it was clean and working fine it would be worth £2,500 tops

 

this is interesting, the temp gauge on the dash goes happily upto 90 degrees C but if it's a 3 wire (temp to dash, temp to g/b and neg) then that could be a possibility
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Based on the ford setup check for two separate temperature sensors in the thermostat housing - one for the gauge (standard old fashioned looking) and one for the ECU/ TCM (bigger and fatter).

 

This would be too expensive then:

SSANGYONG Rexton DAEWOO Musso Korando NEW BTRA GEARBOX *BRAND NEW IN CRATE* TQ95 | eBay
http://www.ebay.co.uk/itm/SSANGYONG...NG-DAEWOO-Musso-Rexton-3-2i-NEW-BTRA-GEARBOX-BRAND-NEW-CRATE-TQ95-/160801576476

 

this is interesting, the temp gauge on the dash goes happily upto 90 degrees C but if it's a 3 wire (temp to dash, temp to g/b and neg) then that could be a possibility

And more likely one wire to ECU then two wires to TCU and gauge.

 

Any chance other than Castrol TQ 95 has been put in the gearbox?

 

This I can't be sure of, only way to know 100% is to do a full oil change

 

I see from here http://ssangyongclub.co.uk/download/ISB2002015RekesRexton.pdf pin 14 is the pin for extracting codes from the BTR Transmission control unit. You amy be able to extract the codes using the process here Ford Automatic Transmission

 

This suggests two temp sensors http://ssangyongclub.co.uk/download/WP.pdf

 

Many thanks to all the information, sadly I have not as yet had chance to look at this, I have found a friend with a launch x143 unit that can read the ssangyong's (not sure how much tho) will look into the temp switch's the second I can lift the bonnet, I'll report back for everyone

 

I gather TQ95 is hard to get in the UK and the use of any other oil will cause issues. I would contact Castrol in the UK and see if you can send them a sample of the oil to confirm its TQ95 or look at full replacement of the oil. And avoid flushing machines as he BTR's don't like them.

 

Tq95 is harder / expensive to get nearly £100 for 5 litres, when the levels were checked the garage said they don't think it's be opened before but obviously this is no garantee, the car's only done 70,000 miles so should be good oil wise, looked under the good when wife was getting kids in the other car, found the 2 temp sensors, 1 when unplugged effects the dash display, the other doesn't, so to check this can I simply bridge the 2 cables in effect giving the car a high temp reading ?

 

e.g. REXTON RX290 ATF.Alternative to castrol tq95 : Resource Center

 

see http://www.pab-discount.fr/pab/10160.pdf
See faulty shift pattern faults page 44.

 

Sadly this document shows information for the newer 5 speed merc gearbox not the 4 speed btr box

 

If you end up needing some TQ95 it might be worth buying some on ebay Australia $120 dor 20 litres or $40 for 4 litres

Castrol Auto Transmission Fluid Transmax TQ95 4 Litre | eBay
Castrol ATF TQ DIII 18 7kg Automatic Transmission Fluid | eBay

I don't know what shipping to the UK would be but it may be worth investigating.

 

OK using my own Ford - BTR workshop manual I note that if the S2 solenoid has failed and is always on you will get 2nd instead of 3rd and 1st instead of 4th and in operation a 2nd to 1st downshift on acceleration from rest ( a C1 clutch failure will also act the same way). A failed S7 solenoid - always on - will give a locked torque convertor in 3rd and 4th.

 

Note there are some non Castrol TQ95 alternatives Shell-ATF XTR, Ampol-Autotrans Fluid BW, Valvoline- ATF type 95LE, BP Autran LE, Mobil ATF 95LE. The Valvoline Type 95LE one in particular is often used in OZ.

 

Some Maserati's also used the same BTR trans so check out the local Maser dealers and forums too.

 

Just a little update, found the gearbox ecu and pulled the cables off it hoping to get limp home mode (stuck in third) and I get second (unless I only ever get 2nd and 3rd)

If I put the car in d and travel at 45mph then take my foot off the accelerator the car seems to go into neutral and coasts along, if I put it in 3rd and do the same the gearbox holds the gear and slows down with foot off accelerator

How can I drain the gearbox of all the oil to give that a go (assuming I can find the oil cheap enough to try this)

 

Found 4liters from an Aussie seller on eBay for £40 delivered of atf 95le which isn't to bad but i guess I'll need more than 4 litres??

 

Got it on a launch x431 reader to, no faults found, live data shower the temp sensor was giving a good reading, would this be the temp sensor from water housing or temp sensor from inside box? If the temp sensor in box failed would that cause problems?

 

How can I drain the gearbox of all the oil to give that a go (assuming I can find the oil cheap enough to try this)

As most of the ATF will be in the cooler and torque converter the procedure after dropping the transmission cover and changing the filter and refilling it, is to remove the a hose from the trans cooler and idle the engine in park removing a litre at a time (i.e. use the transmission pump to pump it from the cooler, lines and torque convertor) and then stopping the engine and topping up again and continue until the oil be pumped out is clean fresh and new). You'll need about 20 litres. Amsoil used to have a PDF step by step guide for this but I can no longer find it on their website.

 

Found it here : http://www.workablewebtools.com/site_files/103/File/TSB_ATF_and_Filter_Change_Procedures.pdf

 

would this be the temp sensor from water housing or temp sensor from inside box

Thermostat housing .

 

So for clarification, the temp sensor inside the gearbox would that cause issues?

 

Found a document online will give the page view next time I'm on my computer, the document said, problem solving, gear stuck in 1 and 2 only s2 solenoid stuck open, where are s1 and s2 solenoid? Found a seller on eBay au but he's not responded to my email's yet sadly

 

S2 is under the valve body looking from below (i.e. above the valve body). The solenoid numbers are cast into the bottom of the valve body so the are easy to ID. Yes you need to drop the valve body to replace solenoids.