TSB: VOLVO 420, 770, AC, ACL, AUTOCAR, D12, D12A, D12B, D12C, D7C, FE SERIES, TD122FAQ, TD122FTQ, TD60, TD61, VAH, VE D7, VHD, VHL, VN, VN DAY CAB, VN610, VN770, VNL, VNL420, VNL660, VNL770, VNM, VNR, VOLVO TRUCK, VT, WAH, WC, WCA, WG, WI, WIA, WIA64TES, WX, WXLL, WXR

Bulletin S7406 — July 31, 2019

Bulletin Details

Bulletin IDS7406
ManufacturerVOLVO
Models420, 770, AC, ACL, AUTOCAR, D12, D12A, D12B, D12C, D7C, FE SERIES, TD122FAQ, TD122FTQ, TD60, TD61, VAH, VE D7, VHD, VHL, VN, VN DAY CAB, VN610, VN770, VNL, VNL420, VNL660, VNL770, VNM, VNR, VOLVO TRUCK, VT, WAH, WC, WCA, WG, WI, WIA, WIA64TES, WX, WXLL, WXR
Date IssuedJuly 31, 2019
Date Added to NHTSASeptember 23, 2019
ComponentENGINE AND ENGINE COOLING
Vehicles Affected41 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

SCR REPLACEMENT US17-18 (13 CHASSIS)

Affected Vehicles

MakeModelYearComponent
VOLVO 420 060000 ENGINE AND ENGINE COOLING
VOLVO 770 060000 ENGINE AND ENGINE COOLING
VOLVO AC 060000 ENGINE AND ENGINE COOLING
VOLVO ACL 060000 ENGINE AND ENGINE COOLING
VOLVO AUTOCAR 060000 ENGINE AND ENGINE COOLING
VOLVO D12 060000 ENGINE AND ENGINE COOLING
VOLVO D12A 060000 ENGINE AND ENGINE COOLING
VOLVO D12B 060000 ENGINE AND ENGINE COOLING
VOLVO D12C 060000 ENGINE AND ENGINE COOLING
VOLVO D7C 060000 ENGINE AND ENGINE COOLING
VOLVO FE SERIES 060000 ENGINE AND ENGINE COOLING
VOLVO TD122FAQ 060000 ENGINE AND ENGINE COOLING
VOLVO TD122FTQ 060000 ENGINE AND ENGINE COOLING
VOLVO TD60 060000 ENGINE AND ENGINE COOLING
VOLVO TD61 060000 ENGINE AND ENGINE COOLING
VOLVO VAH 060000 ENGINE AND ENGINE COOLING
VOLVO VE D7 060000 ENGINE AND ENGINE COOLING
VOLVO VHD 060000 ENGINE AND ENGINE COOLING
VOLVO VHL 060000 ENGINE AND ENGINE COOLING
VOLVO VN 060000 ENGINE AND ENGINE COOLING
VOLVO VN DAY CAB 060000 ENGINE AND ENGINE COOLING
VOLVO VN610 060000 ENGINE AND ENGINE COOLING
VOLVO VN770 060000 ENGINE AND ENGINE COOLING
VOLVO VNL 060000 ENGINE AND ENGINE COOLING
VOLVO VNL420 060000 ENGINE AND ENGINE COOLING
VOLVO VNL660 060000 ENGINE AND ENGINE COOLING
VOLVO VNL770 060000 ENGINE AND ENGINE COOLING
VOLVO VNM 060000 ENGINE AND ENGINE COOLING
VOLVO VNR 060000 ENGINE AND ENGINE COOLING
VOLVO VOLVO TRUCK 060000 ENGINE AND ENGINE COOLING
VOLVO VT 060000 ENGINE AND ENGINE COOLING
VOLVO WAH 060000 ENGINE AND ENGINE COOLING
VOLVO WC 060000 ENGINE AND ENGINE COOLING
VOLVO WCA 060000 ENGINE AND ENGINE COOLING
VOLVO WG 060000 ENGINE AND ENGINE COOLING
VOLVO WI 060000 ENGINE AND ENGINE COOLING
VOLVO WIA 060000 ENGINE AND ENGINE COOLING
VOLVO WIA64TES 060000 ENGINE AND ENGINE COOLING
VOLVO WX 060000 ENGINE AND ENGINE COOLING
VOLVO WXLL 060000 ENGINE AND ENGINE COOLING
VOLVO WXR 060000 ENGINE AND ENGINE COOLING

Related VOLVO Recalls

CampaignModelYearComponentSummary
VNL (4) 2026 SERVICE BRAKES, AIR:ANTILOCK:CONTROL ... Volvo Trucks North America (Volvo Trucks) is recalling certain 2026-2027 VNR ...
VNL (4) 2027 SERVICE BRAKES, AIR:ANTILOCK:CONTROL ... Volvo Trucks North America (Volvo Trucks) is recalling certain 2026-2027 VNR ...
VNR (4) 2027 SERVICE BRAKES, AIR:ANTILOCK:CONTROL ... Volvo Trucks North America (Volvo Trucks) is recalling certain 2026-2027 VNR ...
VNL (4) 2025 SERVICE BRAKES, AIR:ANTILOCK:CONTROL ... Volvo Trucks North America (Volvo Trucks) is recalling certain 2026-2027 VNR ...
VNR (4) 2026 SERVICE BRAKES, AIR:ANTILOCK:CONTROL ... Volvo Trucks North America (Volvo Trucks) is recalling certain 2026-2027 VNR ...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized VOLVO dealer. Bring this bulletin ID (S7406) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.