Corrosion Protection Guidelines: BMW/Mini

Posted on 23 May 2017 Print

A key factor in collision repair is making long-lasting repairs. When a vehicle is repaired, many areas of corrosion protection are disturbed. This creates corrosion hot spots that left untreated will lead to corrosion and potentially a repair failure. However, there are certain precautions that can be taken to safely and properly restore the corrosion protection throughout the repair process. OEMs often give specifications on restoring corrosion protection. These specifications generally include seam sealer, adhesives, foam fillers, and cavity waxes. Let’s take a look at what BMW/Mini says.

Information on corrosion protection can be found in the vehicle-specific body repair manuals under: Repair Instructions ➤ 41 Body ➤ 41/00 Body ➤ Corrosion Protection. Per the Corrosion Protection document:

  • BMW recommends their own brand of corrosion protection materials including cavity wax, seam sealer, adhesives, and foam. This information can be found in the Overview Of Consumables (Electronic Parts Catalogue) document, which is also linked by clicking on "products recommended".
  • "Required tools can be found in the Aftersales Assistance Portal (ASAP) ? Service/Technology ? Workshop Equipment (Start BMW) ? Shop Workshop Equipment..."
  • Cavity wax for steel: "New sheet-metal parts or cavities, weld seams and folds formed by new sheet-metal parts must be sealed with cavity protection agent after being painted."
  • "new steel doors and lids must be sealed with cavity protection agent after painting"
  • When to apply cavity wax for aluminum.
  • "Prime and seal all weld seams that are sealed with sealant in original condition immediately after repair work."
  • "Seal blind rivets with sealant."

Locations for installation and the recommended type of adhesives and sealants are found in the repair procedures.

Always follow OEM repair procedures for all repairs. Failure to follow corrosion protection guidelines can lead to the premature failure of a repair. Using the proper corrosion protection ensures a complete, safe, and quality repair.

For additional BMW/Mini information, check out the following pages:
BMW OEM Information
Mini OEM Information

Additional I-CAR Collision Repair News you may find helpful:

Related I-CAR Courses

Course BMW Collision Repair Overview

Course Corrosion Protection

Course Seam Sealer


Article validated in 2025

  • Your 2025 Favorites: Top Articles Friday, 16 January 2026

    As 2026 rolls in, we can reflect back on what the previous year had to offer. Let's take a look at some of the collision industry information you've been most interested in from this past year....

  • App-Based Connected Services Considerations: Toyota/Lexus Thursday, 15 January 2026

    Have you had the experience where the vehicle notified the owner that it was being moved while it was in your repair facility? App-based connected services are available from many vehicle makers and may...

  • Digital Key Considerations: Toyota/Lexus Thursday, 15 January 2026

    The intermingling of technology and automobiles continues, with digital key offerings from most vehicle makers. Digital keys utilize smartphone technology to expand vehicle access and owner...

  • Nissan/INFINITI Position Statements: Advanced Driver Assistance System Components Thursday, 8 January 2026

    Nissan/INFINITI released position statements on the use of salvaged, aftermarket, and "secondary-market" advanced driver assistance systems (ADAS) components.

  • I-CAR Repairers Realm: RTS 2025 Year In Review - Now Available Tuesday, 6 January 2026

    I-CAR had a discussion on the Repairability Technical Support (RTS) 2025 year in review.

  • Ford On Target 2025: Volume 4 Monday, 5 January 2026

    Ford has released the fourth installment of their On Target publication for 2025.

  • Structural Sectioning Procedures: Ford/Lincoln - UPDATE Friday, 19 December 2025

    Ask I-CAR receives many technical inquiries referring to sectioning. The collision repair industry wants to know where can you section, does the OEM have a sectioning procedure, and where can I find the...

  • Body Repair Manual Symbols: Hyundai Wednesday, 17 December 2025

    While looking at repair procedures in a body repair manual (BRM) you may notice that symbols are used to indicate specific operations or parts to be used during the repair process. Most BRMs provide a...

  • Body Repair Manual Symbols: Genesis Wednesday, 17 December 2025

    While looking at repair procedures in a body repair manual (BRM) you may notice that symbols are used to indicate specific operations or parts to be used during the repair process. Most BRMs provide a...

  • App-Based Connected Services Considerations: BMW Wednesday, 10 December 2025

    Have you had an experience where the vehicle notified the owner that it was being moved while it was in your repair facility? App-based connected services are available from many vehicle makers and...