Is he parting out the MY14 RRS ? If so would be interested in buying the harness and RDCU. CheersQuote:
Originally Posted by Graeme
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Is he parting out the MY14 RRS ? If so would be interested in buying the harness and RDCU. CheersQuote:
Originally Posted by Graeme
The RDCU will be the same regardless of the engine but it appears that it will need to be from no earlier than MY14 and possibly no later than MY16 due to the part numbers not superseding to the the MY17 number. Earlier than MY14 appear to only be suitable for up to MY13, including the L405 which makes me think that torque vectoring might not have been available on the MY13 L405.
The RDCU I grabbed then might be the wrong one. I was advised the RDCU was the same with a different flash version for the different cars. The One I grabbed is a "L494 2013- on rear active diff control module ecu LR086488" from a 2018 face lifted car. The part number on the unit is HY32-4C117-AD and I have looked at a lot of these from 2016 through to 2019 and all have the same part number.Quote:
Originally Posted by Graeme
Gap advised they can flash the unit to whatever version we need to suit the vehicle. The harness is being difficult to source.
Also I was advised the locking diff that I purchased, that actually comes with the 12v locking motor, is un-serviceable but on Topix I found a method to pull apart the diff and replace pinion seals etc.
Graeme, where to you find your part number references ? Topix is really letting me down here.
I recently spotted a reference to a genuine L494/L405 rebuild kit too.
GAP provided a reflash for my ACC radar unit unit when it was discovered that its firmware was for another vehicle - a Jag IIRC.
I get my part numbers from Microcat 2012 version which includes the MY13 L405, but nothing later.
Thanks,Quote:
Originally Posted by Graeme
GAP have said getting a flash to suit the RDCM for my car shouldn't be a problem.
The eDiff turned up yesterday from the UK - Obviously paid too much for freight cause it took only 1.5 week to get here. I've taken the diff to Diff Lappers and have asked Carl to pull it apart, identify the ratio for 3.21 (SDV6) and advise its condition.
Attachment 166077
I also have the RDCM from a 2016 UK L494 as well thats arrived.
I'm sure the harness is in the car to support the eDiff as I remember when fitting the T harness for LAMS there were a few other connectors sitting spare. The RDCM mounts, according to TOPIZ, those spare connectors were directly below where the RDCM mounts into the rear RHS side trunk cavity. Have also traveled to a wrecked L494 and it has spare connectors as well. See below for the mounting location.
Attachment 166079Attachment 166078
The Diff will be installed early December and I've identified the following CCF changes that I think will be required;
- Rear Differential Type = "Rear Diff type ( Controlled by RDCM )"
- Locking Gear axel differential = "Rear Differential Lock-Up is fitted"
- Electronic Differential Participating = "Yes"
- Limited Slip Differential = "Fitted"
Not sure about item 4 and haven't found any for the 4x4i screen changes to show the rear diff locker icon on screen graphically so I'm hoping that will just appear once calibrated.
Attachment 166080
Hopefully this will come together nicely.
Regards and thanks for your assistance Graeme
Your attachments won't open.
The ratio would easily be checked by marking a driveshaft spline then counting the pinion turns to get the mark back to the starting point. Whilst only counting the teeth on the pinion and crown wheel will allow the precise ratio to be determined, the other ratios used are sufficiently different to be able to determine if approximately 3.2 turns of the pinion results in a full turn of the crown wheel. No need to check the other side too unless turning the pinion only turns 1 side indicating that there is an internal problem.
Apologies Re attachments. I thought following the right process would drop them in but I can’t find where to repost with the correct attachments. Anyway, an update.Quote:
Originally Posted by Graeme
Yesterday the 2016 diff with locking motor was trail fitted into the RRs but the left (?) hand half shaft was the wrong size ie. the two half shafts from the factory open diff didn’t suit the new locking diff. Very disappointed. I can’t find where the different half shaft can be ordered and I’m thinking perhaps my mechanic has it wrong but have yet to speak to me Re the install. I get the feeling he is avoiding me.
LR034535 is the original part number for the MY13 L405's left half-shaft when e-diff fitted so likely the same for your L494. The L405's right half-shaft is the same for both diffs.
I hadn't previously considered that the e-diff shafts might be different as my L322's are the same for either diff. The L322's open diff housing is extended on the left side in the same was as the D3/D4 open diff housing is extended but the L405/L494 open diff housing stops short thus requiring a longer half-shaft for the open diff.
E-diff and open diff.
Thankyou - That’s them, I require a LR073345 $1090 inc freight to Brisbane. Rear left hand half shaft.Quote:
Originally Posted by Graeme
The wiring loom isn’t in the car so we’re trying to source at least the end connectors to make one up. Expensive to remove and refit a rear diff - $900 in labour each way 😮