So I'm two days into owning a '18 RRS (still have a LR3), and while it was factory equipped with both Lane Departure Warning and Traffic Sign Recognition, these appear to have been deactivated at some point. Does anyone one know the relevant CCF settings for the front cameras and otherwise to turn these on? I suspect I'm missing a setting or two. TSR had been turned off in the CCF. I've been through the retrofit threads on the forums and the documentation from GAP, am wondering if someone with an '18 or '19 knows the variables. Thanks,
- scooter

 

As always, the team at GAP is super helpful and I now should have the correct CCF details. Unfortunately I cannot see the IPMA module on the ECU list, so this now points to a hardware issue. Next step I think is to pull the camera module and test the harness. Anyone have a wiring diagram for the IPMA module?

 

So I took apart the rearview mirror and camera assembly, it's really not that hard and only takes about 5 minutes. The mirror is on there really stiff, but it will slide off, and then it's just a question of removing two plastic clips. My issue was immediately apparent: probably at the factory, when the IPMA module was installed, the CAN wires of the harness were pinched in between the IPMA module chassis (metal) and one of the securing clips. Upon inspection, the CAN High line insulation had cracked open and I believe the line shorted against the module chassis, which is a ground source for the module.

The CAN connections in the harness are good (I get 60 ohms resistance between them -- pins 2 and 8 on the harness -- which is spec). The IPMA module heats up when the car is on which means power and ground connections are working, but the IPMA ECU is not visible to the car. My reasoned conclusion here is that the ground short fried the module's CAN transceiver.

I've got a replacement module on order. The pinout on the pins of the module for anyone that needs it is:

1: Ground
2: CAN Low
3: CAN Low (private)
4: Unused
5: Unused
6: Ignition + from fuse 27 in the rear fuse box
7: Ground for cooling fan
8: CAN High
9: CAN High (private)
10: Unused
11: Cooling fan signal
12: Cooling fan power

 

New module arrived yesterday, and now everything is working. I have to say having the LDW system mimic running over a rumble strip on the road is a pretty neat trick. At first the car could not see the new module, but if you go through the fault codes in the GAP you can detect it and then run the configuration service routine. Now... my next trick.... adaptive cruise control (but not for a bit).

 

Good info, as soon as we get our 2018 RSS Sport I will check these out. Are all of these models equipped with these features?