TCM softwate update
#1
TCM softwate update
Good day everyone,
I have the infamous sluggish Auto box behavior and found out that there is a TSB solving such issues, but got a recommendation from a Jag / Range Rover specialist that updating an old & driven (93,000km) transmission can result in it's failure as he experienced numerous times of it happening on Range Rovers (ZF gearbox). Is this true? As I can't see anywhere in the bulletin that there may be danger in doing this procedure on old machines? I'm really into getting the best experience of my car and still love it for all around experience it provides me, but got a little scared after those warnings, though they were related to Range Rovers.
What do you guys say? Clutch pressure changes on worn parts with new software, etc, anything to halt me from this procedure? Has anyone done it before on a dated vehicle?
The Bulletin:
http://www.jagrepair.com/images/TSB/...0Operation.pdf
Thank you for your time in advance,
David
I have the infamous sluggish Auto box behavior and found out that there is a TSB solving such issues, but got a recommendation from a Jag / Range Rover specialist that updating an old & driven (93,000km) transmission can result in it's failure as he experienced numerous times of it happening on Range Rovers (ZF gearbox). Is this true? As I can't see anywhere in the bulletin that there may be danger in doing this procedure on old machines? I'm really into getting the best experience of my car and still love it for all around experience it provides me, but got a little scared after those warnings, though they were related to Range Rovers.
What do you guys say? Clutch pressure changes on worn parts with new software, etc, anything to halt me from this procedure? Has anyone done it before on a dated vehicle?
The Bulletin:
http://www.jagrepair.com/images/TSB/...0Operation.pdf
Thank you for your time in advance,
David
#2
The ZF I can see...many people never change the fluid and filters in them, and they are just time bombs in that case.
The jag has a Jatco box, which is a lot more capable of being ignored. There are plenty of Japanese cars running these transmissions 250-300K miles with never so much as a fluid change!
The jag has a Jatco box, which is a lot more capable of being ignored. There are plenty of Japanese cars running these transmissions 250-300K miles with never so much as a fluid change!
#3
#4
#5
The JATCOs do need to be serviced like any other transmission. They are as said above just ignored like a lot of Toyota and Honda's are. Only they are made specifc for Ford/Jaguar and cost a little bit more and most Asians are not AWD.
They die on fluid changes when a "automotive technician" drains the fluid through the large 13-14mm bolt that looks like a drain plug. Sorry that bolt hols the reverse band in!!!
Drain it and refill with good fluid IE full synthetic. Just like Toyota and Honda it is not recommended to power flush any JATCO unit.
TCM is update is the last step, it can help, but start with the fluid.
#6
#7
Trending Topics
#8
Drain Plug
Fill Plug
THIS IS THE REVERSE BAND BOLT!!!!! DON'T TAKE OUT
Transmission Fluid Level Check
WARNING:
VERIFY PROPER PLUG IS REMOVED FOR LEVEL CHECK.
Because of the similarity to other plugs and fasteners on the transmission, the potential for loosening an incorrect fastener, instead of the level plug, exists. There is a risk for internal transmission damage if the improper fastener is removed.
- Removal of the reduction gear brake band bolt can cause total loss of drive or a substantial reduction in the performance of the transmission.
- Removal of the parking pawl rod plate retaining bolt (located next to the XYZ switch) will result in problems/gear lever movement restrictions.
- Raise and support the vehicle.
- Connect the approved Jaguar diagnostic system.
- Make sure J-Gate shift selector is in the Park position (P).
- With the engine running and the foot brake applied, move the J-Gate shift selector through "P-R-N-D-4-3-2" and back to the "P" position to circulate the automatic transmission fluid until the temperature reaches 30 to 40°C (86 to 104°F) on the approved Jaguar diagnostic system.
- When the automatic transmission fluid temperature reaches 35°C (95°F) check that the selector lever is in the "P. position raise the vehicle.
- With the engine running, remove the automatic transmission fluid level tube plug.
- If the automatic transmission fluid does not come out of the transmission fluid level tube the automatic transmission fluid level is insufficient. If this is the case add the automatic transmission fluid in 0.5 litre units into the automatic transmission fluid charging pipe until the automatic transmission fluid comes out of the automatic transmission fluid level tube.
- Allow the automatic transmission fluid to come out of the automatic transmission fluid level tube until the overflow stops at a temperature of no more than 40°C (104°F).
- If when the automatic transmission fluid level plug is first removed and automatic transmission fluid comes out of the automatic transmission fluid level tube, allow the automatic transmission fluid to come out of the automatic transmission fluid level tube until the overflow stops at a temperature ofno more than 40°C (104°F).
- Install the transmission fluid level plug.
- Install the automatic transmission fluid charging pipe cap.
- Lower the vehicle.
- Disconnect the approved Jaguar diagnostic system.
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myexcursion (09-10-2014)
#9
Level plug
Drain Plug
Fill Plug
THIS IS THE REVERSE BAND BOLT!!!!! DON'T TAKE OUT
Transmission Fluid Level Check
WARNING:
VERIFY PROPER PLUG IS REMOVED FOR LEVEL CHECK.
Because of the similarity to other plugs and fasteners on the transmission, the potential for loosening an incorrect fastener, instead of the level plug, exists. There is a risk for internal transmission damage if the improper fastener is removed.
Drain Plug
Fill Plug
THIS IS THE REVERSE BAND BOLT!!!!! DON'T TAKE OUT
Transmission Fluid Level Check
WARNING:
VERIFY PROPER PLUG IS REMOVED FOR LEVEL CHECK.
Because of the similarity to other plugs and fasteners on the transmission, the potential for loosening an incorrect fastener, instead of the level plug, exists. There is a risk for internal transmission damage if the improper fastener is removed.
- Removal of the reduction gear brake band bolt can cause total loss of drive or a substantial reduction in the performance of the transmission.
- Removal of the parking pawl rod plate retaining bolt (located next to the XYZ switch) will result in problems/gear lever movement restrictions.
- Raise and support the vehicle.
- Connect the approved Jaguar diagnostic system.
- Make sure J-Gate shift selector is in the Park position (P).
- With the engine running and the foot brake applied, move the J-Gate shift selector through "P-R-N-D-4-3-2" and back to the "P" position to circulate the automatic transmission fluid until the temperature reaches 30 to 40°C (86 to 104°F) on the approved Jaguar diagnostic system.
- When the automatic transmission fluid temperature reaches 35°C (95°F) check that the selector lever is in the "P. position raise the vehicle.
- With the engine running, remove the automatic transmission fluid level tube plug.
-
- Remove and discard the sealing washer.
- If the automatic transmission fluid does not come out of the transmission fluid level tube the automatic transmission fluid level is insufficient. If this is the case add the automatic transmission fluid in 0.5 litre units into the automatic transmission fluid charging pipe until the automatic transmission fluid comes out of the automatic transmission fluid level tube.
-
- Remove the automatic transmission fluid charging pipe cap.
- Allow the automatic transmission fluid to come out of the automatic transmission fluid level tube until the overflow stops at a temperature of no more than 40°C (104°F).
- If when the automatic transmission fluid level plug is first removed and automatic transmission fluid comes out of the automatic transmission fluid level tube, allow the automatic transmission fluid to come out of the automatic transmission fluid level tube until the overflow stops at a temperature ofno more than 40°C (104°F).
- Install the transmission fluid level plug.
-
- Install a new sealing washer.
- Tighten to 15 Nm.
- Install the automatic transmission fluid charging pipe cap.
- Lower the vehicle.
- Disconnect the approved Jaguar diagnostic system.
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