b) DPF clogging, possibly leading to complete failure. New information (Sept 2020) suggests that during Urban driving the DPF might need to "self-clean" every 75 to 100 miles, a process that JLR
Other things to check could be, the transmission temperature sensor, battery, brake light bulbs (not likely), and brake light switch (not likely). You need to have the fault codes read on it to start. There is a procedure for emergency EPB release, which is worth a try to make it go temporarily; Turn off the engine. This has happened over a number of years and were replaced one at a time. You will normally find that one injector is the cause, forcing the other one to compensate for it. The black smoke is slight over fuelling, which can happen under harsh acceleration, or heavy load. Discovery 3 TDV6 S G4 No 29 - Mine. Discovery 4 TDV6 SE - SWAMBO's. With a Foxwell NT510 I've got I got the following codes that wouldn't erase, so presume hard faults: 1: Invalid data received from dynamics control module. Temporary. 2: Invalid data received from steering angle sensor. Temporary. But looking at the SAS in detail it shows no faults at all. Failure Date: 10/27/2023. The contact owns a 2017 Land Rover Discovery. The contact received notification of NHTSA campaign number: 23v393000 (electrical system, latches/locks/linkages) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a L319 Discovery 3 and 4. It would fault after 20 min of driving same issue only normal height available. LAND ROVER and its logo are the registered trademarks skA6bt.
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  • land rover discovery 3 faults