| Hotjava69 |
05-21-2023 04:39 PM |
No start after TCU (telematics) battery change
My 2017 RR L405 had sos limited functionality. The battery was on back order for months. Finally JLR suggested a Jaguar equivalent which seemed to be a good cross over. I replaced the battery and the light never reset from the dash. I went back to check that the battery was plugged in good and ended up unplugging the cable to have better access. After this i ended up replacing the main battery as i received a low battery warning for leaving the car open for a period of time. The battery tested bad and would not hold a charge. Now only the dash and all accessory lights come on. When you place your foot on brake and press start/stop nothing happens except the dash goes black and shows the mileage, date and a P. The shifter does not come up and the car does not start. The actuator for the air intake on the engine moves and then the instrument cluster goes blank. I checked all fuses and can not see an issue. Looking for any suggestions. I assume the configuration might have gotten changed or something. Any help is appreciated.
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