Used Toyota 4Runner — common problems and service

Yes. The 2019-2020 4Runner, and some 2021 examples in later campaign expansions, can have a Denso low-pressure fuel pump that fails internally and stalls the engine, especially at highway speed. The driver may notice intermittent stalling, hard starting, or a check-engine light with codes P0087 or P00C6, and power steering and power brake assist can drop after a stall. Toyota covered this under recall 20V-420, and out-of-warranty dealer replacement is about $900.

Yes. 2019-2024 4Runners with the 4.0L V6 can develop heat-cycle cracks in the exhaust manifold, producing a metallic tick on cold start that fades when warm and returns under load. The manifold is integrated with the catalytic converter, so dealers often quote around $3,500; independent shops typically run $1,500 to $2,800 depending on the repair.

Yes. 2019-2024 4Runners can leak water into the rear cargo area because the spoiler grommets, hatch seals, or drain channels fail, leaving damp carpet near the spare tire and sometimes a faulty rear camera. If left unrepaired, water can corrode the rear wiring connector and cause intermittent shorts or a parasitic drain. Resealing the spoiler or replacing the seals typically costs around $500, with more if the wiring harness needs replacement.