P38A Nanocom near Lanarkshire?

jordanpc2 · Mar 29, 2023

Hi guys.. got the P38 dropped off at the house... Still getting gearbox fault, no drive but reverse all ok
That and the "repaired" key seems more like a replacement to me so need that programmed in.

Wondering if anyone near the Cumbernauld area has nanocom or similar which could handle this?
I will cross your palm with silver and should u need diagnostic for anything else please get in touch as I have loads of kit...just not much cop for a P38!

To be clear that's a key program and auto gearbox diagnostic on a P38 4.6 Thor HSE 1999

marjon · Mar 29, 2023

Firstly Welcome

.

If the key has the old guts in then a simple sync in the door or ignition should work.

Gearbox, dont think diagnostics will help. A change of fluid may help the HP24 is pretty strong but still needs looking after. do a search, think reverse but no drive is not unheard of if I remember.

Good luck

.

J

jordanpc2 · Mar 29, 2023

Yeah it's got fresh fluid, still no drive, no sound like it's selecting a gear so its down to shaft sensors or the a clutch i reckon. Diag should advise on if there's a sensor fault, it gets a"gearbox fault" message on dash so theyll be something stored.

Sync also been tried, fairly confident guts are different. Rf receiver replacement done aswell no luck

Rubberknees · Mar 29, 2023

jordanpc2 said:
Yeah it's got fresh fluid, still no drive, no sound like it's selecting a gear so its down to shaft sensors or the a clutch i reckon. Diag should advise on if there's a sensor fault, it gets a"gearbox fault" message on dash so theyll be something stored.

Sync also been tried, fairly confident guts are different. Rf receiver replacement done aswell no luck

When you say fresh fluid has it been refilled as per Rave

jordanpc2 · Mar 29, 2023

I done it nearly a year ago... I'll dig out the rave page and see if I recall following it

Datatek · Mar 29, 2023

There is no programming for a P38 FOB.
Gearbox should have been filled when cold with the engine idling and after passing through all gears.

Rubberknees · Mar 29, 2023

jordanpc2 said:
I done it nearly a year ago... I'll dig out the rave page and see if I recall following it

Fill to level then run engine when cold, move gear lever through all positions then with engine still running fill to level is the way

jordanpc2 · Mar 29, 2023

Datatek said:
There is no programming for a P38 FOB.
Gearbox should have been filled when cold with the engine idling and after passing through all gears.

To be clear... Filled when cold with engine idling and all gears through after filling... I believe that was what was

Datatek · Mar 29, 2023

jordanpc2 said:
To be clear... Filled when cold with engine idling and all gears through after filling... I believe that was what was

Through all gears BEFORE final filling.

jordanpc2 · Mar 29, 2023

Datatek said:
There is no programming for a P38 FOB.
Gearbox should have been filled when cold with the engine idling and after passing through all gears.

Also the fobs can be synced with nanocom? Rf receiver picks up code from fob to code? Am I wrong here?

marjon · Mar 29, 2023

Shall we start with. How’s the battery?

it needs to be good.

J

jordanpc2 · Mar 29, 2023

marjon said:
Shall we start with. How’s the battery?

it needs to be good.

J

Been tested with several 90ah+ batteries over the last year, all known good. There is a power drain but it appears small. Due to detect that shortly.

jordanpc2 · Mar 29, 2023

Datatek said:
Through all gears BEFORE final filling.

It will have received a top up after going through gears... This is quite a normal autobox fill up sequence. Not the first zf I've worked on so aye that will have been done.

Datatek · Mar 29, 2023

jordanpc2 said:
Also the fobs can be synced with nanocom? Rf receiver picks up code from fob to code? Am I wrong here?

No, the FOB cannot be synced with Nanocom, it has to be synced to the car by the procedure in RAVE which varies according to year.
As Marjon said, what is the battery voltage like?

marjon · Mar 29, 2023

jordanpc2 said:
Also the fobs can be synced with nanocom? Rf receiver picks up code from fob to code? Am I wrong here?

If the fob code don’t match what’s in the BECM, it’s nothing but a plastic box with a key. Anybody reconditioning a p38 fob will know that.

Follow the sync procedure. Yes you may need the rf receiver plugged back in to do it.

J

Datatek · Mar 29, 2023

jordanpc2 said:
Been tested with several 90ah+ batteries over the last year, all known good. There is a power drain but it appears small. Due to detect that shortly.

There is always a power drain on the P38. When the BECM goes to sleep it should be between 30 & 50 milliamps.
There is no such thing as a known good battery when it comes to the P38, what matters is the voltage at rest which should be a minimum of 12.6 volts.

Datatek · Mar 29, 2023

marjon said:
If the fob code don’t match what’s in the BECM, it’s nothing but a plastic box with a key. Anybody reconditioning a p38 fob will know that.

Follow the sync procedure. Yes you may need the rf receiver plugged back in to do it.

J

As above. You may also need to clear the RF memory in the BECM.

jordanpc2 · Mar 29, 2023

marjon said:
If the fob code don’t match what’s in the BECM, it’s nothing but a plastic box with a key. Anybody reconditioning a p38 fob will know that.

Follow the sync procedure. Yes you may need the rf receiver plugged back in to do it.

J

Rf receiver is plugged in both old and 2nd hand unit tested.. no luck... Sync procedure on this model is just to unlock with ignition on.. it's a Thor model. Unlock not being picked up...

I am aware that swapping a key fob guts will no longer work with becm. I did not personally refurb the key

jordanpc2 · Mar 29, 2023

Datatek said:
There is always a power drain on the P38. When the BECM goes to sleep it should be between 30 & 50 milliamps.
There is no such thing as a known good battery when it comes to the P38, what matters is the voltage at rest which should be a minimum of 12.6 volts.

Yeah 12.8 resting 14.3/4 running.. not been below 12.6 on latest battery unless left for a few days

jordanpc2 · Mar 29, 2023

Datatek said:
As above. You may also need to clear the RF memory in the BECM.

Don't know this one..... How do do?

P38A Nanocom near Lanarkshire?

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