Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 250; Flight Crew Type 11000
Human-Machine Interface; Communication Breakdown; Troubleshooting
Aircraft Equipment Problem Less Severe; Deviation - Altitude Undershoot; Deviation - Speed All Types; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Provided Assistance; Flight Crew Overcame Equipment Problem; Flight Crew Requested ATC Assistance / Clarification; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft
Descending into ZZZ at the ZZZZZ Arrival at the ZZZZZ way point; the FMC AP/RST (Flight Management Computer Auto Pilot Reset) light Illuminated at the ZZZZZ turn point; disengaging the LNAV; VNAV; and the autopilot.  ATC communication was congested; and as we were troubleshooting; and attempting to communicate with ATC; the PF who was hand flying; allowed the aircraft to get high on path and deviate laterally from the course.  It took several attempts to communicate with ATC and re-establish the lateral and vertical course.  Doing so caused our speed to be above the charted speed at ZZZZZ1; and ATC cleared us on a heading and descent below the ZZZZZ1 fix restriction. The Pilot Flying hand flew until on the base turn; the autopilot was re-engaged in the Heading Select and Vertical Speed mode.Landed safely; and the malfunction was reported to Maintenance Control and documented in the logbook. This was my second leg in a MAX 8 aircraft in more than two years; and the aircraft differences; although not great; were distracting and likely aggravated the situation.As always; when automation fails or malfunctions; select another mode or turn it off; and revert to basic airmanship and fly the aircraft.  Do not get buried in troubleshooting.
Lost LNAV over ZZZZZ2 fix got a AP RST yellow light. Couldn't reset anything. Hand flew; we were high and fast over ZZZZZ1.
B737 MAX 8 flight crew reported FMC AP RST light illuminated during approach and auto pilot would not reset; causing Pilot Flying to hand fly the approach and landing.